From 7f563e614fb9a8ce7c8904a3ad346b7e38238339 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Fri, 2 Jan 2015 17:32:50 +0000
Subject: [PATCH 1/3] fix unwanted merge in previous commit

---
 iterator/iterator.c | 44 --------------------------------------------
 iterator/iterator.h |  6 ------
 2 files changed, 50 deletions(-)

diff --git a/iterator/iterator.c b/iterator/iterator.c
index 06653442fae0..df5f645cc28c 100644
--- a/iterator/iterator.c
+++ b/iterator/iterator.c
@@ -120,7 +120,6 @@ iter_new(struct module_qstate* qstate, int id)
 	iq->query_restart_count = 0;
 	iq->referral_count = 0;
 	iq->sent_count = 0;
-	iq->target_count = NULL;
 	iq->wait_priming_stub = 0;
 	iq->refetch_glue = 0;
 	iq->dnssec_expected = 0;
@@ -454,26 +453,6 @@ handle_cname_response(struct module_qstate* qstate, struct iter_qstate* iq,
 	return 1;
 }
 
-/** create target count structure for this query */
-static void
-target_count_create(struct iter_qstate* iq)
-{
-	if(!iq->target_count) {
-		iq->target_count = (int*)calloc(2, sizeof(int));
-		/* if calloc fails we simply do not track this number */
-		if(iq->target_count)
-			iq->target_count[0] = 1;
-	}
-}
-
-static void
-target_count_increase(struct iter_qstate* iq, int num)
-{
-	target_count_create(iq);
-	if(iq->target_count)
-		iq->target_count[1] += num;
-}
-
 /**
  * Generate a subrequest.
  * Generate a local request event. Local events are tied to this module, and
@@ -545,10 +524,6 @@ generate_sub_request(uint8_t* qname, size_t qnamelen, uint16_t qtype,
 		subiq = (struct iter_qstate*)subq->minfo[id];
 		memset(subiq, 0, sizeof(*subiq));
 		subiq->num_target_queries = 0;
-		target_count_create(iq);
-		subiq->target_count = iq->target_count;
-		if(iq->target_count)
-			iq->target_count[0] ++; /* extra reference */
 		subiq->num_current_queries = 0;
 		subiq->depth = iq->depth+1;
 		outbound_list_init(&subiq->outlist);
@@ -1375,12 +1350,6 @@ query_for_targets(struct module_qstate* qstate, struct iter_qstate* iq,
 
 	if(iq->depth == ie->max_dependency_depth)
 		return 0;
-	if(iq->depth > 0 && iq->target_count &&
-		iq->target_count[1] > MAX_TARGET_COUNT) {
-		verbose(VERB_QUERY, "request has exceeded the maximum "
-			"number of glue fetches %d", iq->target_count[1]);
-		return 0;
-	}
 
 	iter_mark_cycle_targets(qstate, iq->dp);
 	missing = (int)delegpt_count_missing_targets(iq->dp);
@@ -1563,7 +1532,6 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 			return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 		}
 		iq->num_target_queries += qs;
-		target_count_increase(iq, qs);
 		if(qs != 0) {
 			qstate->ext_state[id] = module_wait_subquery;
 			return 0; /* and wait for them */
@@ -1573,12 +1541,6 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 		verbose(VERB_QUERY, "maxdepth and need more nameservers, fail");
 		return error_response_cache(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
-	if(iq->depth > 0 && iq->target_count &&
-		iq->target_count[1] > MAX_TARGET_COUNT) {
-		verbose(VERB_QUERY, "request has exceeded the maximum "
-			"number of glue fetches %d", iq->target_count[1]);
-		return error_response_cache(qstate, id, LDNS_RCODE_SERVFAIL);
-	}
 	/* mark cycle targets for parent-side lookups */
 	iter_mark_pside_cycle_targets(qstate, iq->dp);
 	/* see if we can issue queries to get nameserver addresses */
@@ -1608,7 +1570,6 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 		if(query_count != 0) { /* suspend to await results */
 			verbose(VERB_ALGO, "try parent-side glue lookup");
 			iq->num_target_queries += query_count;
-			target_count_increase(iq, query_count);
 			qstate->ext_state[id] = module_wait_subquery;
 			return 0;
 		}
@@ -1764,7 +1725,6 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 			return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 		}
 		iq->num_target_queries += extra;
-		target_count_increase(iq, extra);
 		if(iq->num_target_queries > 0) {
 			/* wait to get all targets, we want to try em */
 			verbose(VERB_ALGO, "wait for all targets for fallback");
@@ -1805,7 +1765,6 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 		/* errors ignored, these targets are not strictly necessary for
 		 * this result, we do not have to reply with SERVFAIL */
 		iq->num_target_queries += extra;
-		target_count_increase(iq, extra);
 	}
 
 	/* Add the current set of unused targets to our queue. */
@@ -1851,7 +1810,6 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 					return 1;
 				}
 				iq->num_target_queries += qs;
-				target_count_increase(iq, qs);
 			}
 			/* Since a target query might have been made, we 
 			 * need to check again. */
@@ -2963,8 +2921,6 @@ iter_clear(struct module_qstate* qstate, int id)
 	iq = (struct iter_qstate*)qstate->minfo[id];
 	if(iq) {
 		outbound_list_clear(&iq->outlist);
-		if(iq->target_count && --iq->target_count[0] == 0)
-			free(iq->target_count);
 		iq->num_current_queries = 0;
 	}
 	qstate->minfo[id] = NULL;
diff --git a/iterator/iterator.h b/iterator/iterator.h
index 1364b86d722b..0b91760d4a49 100644
--- a/iterator/iterator.h
+++ b/iterator/iterator.h
@@ -52,8 +52,6 @@ struct iter_donotq;
 struct iter_prep_list;
 struct iter_priv;
 
-/** max number of targets spawned for a query and its subqueries */
-#define MAX_TARGET_COUNT	32
 /** max number of query restarts. Determines max number of CNAME chain. */
 #define MAX_RESTART_COUNT       8
 /** max number of referrals. Makes sure resolver does not run away */
@@ -253,10 +251,6 @@ struct iter_qstate {
 
 	/** number of queries fired off */
 	int sent_count;
-	
-	/** number of target queries spawned in [1], for this query and its
-	 * subqueries, the malloced-array is shared, [0] refcount. */
-	int* target_count;
 
 	/**
 	 * The query must store NS records from referrals as parentside RRs

From 7954be7fa5ea70de36aacebb8bcca2a70af709f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Fri, 2 Jan 2015 17:35:29 +0000
Subject: [PATCH 2/3] import unbound 1.5.1

---
 Makefile.in                        |    4 +-
 compat/arc4_lock.c                 |    4 +-
 compat/getentropy_linux.c          |   11 +-
 compat/getentropy_win.c            |    4 +-
 config.h.in                        |    3 -
 configure                          | 1429 +---------------------------
 configure.ac                       |   36 +-
 contrib/README                     |    4 +
 contrib/aaaa-filter-iterator.patch |  394 ++++++++
 daemon/cachedump.c                 |    2 +-
 daemon/remote.c                    |   10 +-
 daemon/unbound.c                   |    2 +-
 daemon/worker.c                    |    2 +-
 dns64/dns64.c                      |    8 +-
 doc/Changelog                      |   60 ++
 doc/README                         |    2 +-
 doc/example.conf.in                |    2 +-
 doc/libunbound.3.in                |    4 +-
 doc/unbound-anchor.8.in            |    8 +-
 doc/unbound-checkconf.8.in         |    2 +-
 doc/unbound-control.8.in           |    2 +-
 doc/unbound-host.1.in              |    2 +-
 doc/unbound.8.in                   |    4 +-
 doc/unbound.conf.5.in              |    2 +-
 iterator/iter_utils.c              |    7 +-
 iterator/iter_utils.h              |    3 +-
 iterator/iterator.c                |   71 +-
 iterator/iterator.h                |    6 +
 libunbound/unbound.h               |    2 +-
 pythonmod/pythonmod_utils.c        |    4 +-
 services/cache/dns.c               |   34 +-
 services/cache/dns.h               |    9 +-
 services/mesh.c                    |   43 +-
 services/mesh.h                    |   13 +-
 smallapp/unbound-host.c            |    2 +-
 util/data/msgreply.c               |   13 +-
 util/data/msgreply.h               |    5 +-
 util/fptr_wlist.c                  |    4 +-
 util/fptr_wlist.h                  |    4 +-
 util/iana_ports.inc                |    3 +
 util/module.h                      |   10 +-
 util/net_help.c                    |    2 +-
 validator/validator.c              |   31 +-
 43 files changed, 705 insertions(+), 1562 deletions(-)
 create mode 100644 contrib/aaaa-filter-iterator.patch

diff --git a/Makefile.in b/Makefile.in
index 7300b3e34768..02532a951d2f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -80,7 +80,7 @@ LINTFLAGS+="-Dsigset_t=long"
 # FreeBSD
 LINTFLAGS+="-D__uint16_t=uint16_t" "-DEVP_PKEY_ASN1_METHOD=int" "-D_RuneLocale=int" "-D__va_list=va_list"
 
-INSTALL=$(srcdir)/install-sh
+INSTALL=$(SHELL) $(srcdir)/install-sh
 
 #pythonmod.c is not here, it is mentioned by itself in its own rules,
 #makedepend fails on missing interface.h otherwise.
@@ -397,7 +397,7 @@ libunbound/python/libunbound_wrap.c:	$(srcdir)/libunbound/python/libunbound.i un
 
 # Pyunbound python unbound wrapper
 _unbound.la:	libunbound_wrap.lo libunbound.la
-	$(LIBTOOL) --tag=CC --mode=link $(CC) $(RUNTIME_PATH) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -module -version-info @LIBUNBOUND_CURRENT@:@LIBUNBOUND_REVISION@:@LIBUNBOUND_AGE@ -no-undefined -o $@ libunbound_wrap.lo -rpath $(PYTHON_SITE_PKG) L. -L.libs -lunbound $(LIBS)
+	$(LIBTOOL) --tag=CC --mode=link $(CC) $(RUNTIME_PATH) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -module -avoid-version -no-undefined -shared -o $@ libunbound_wrap.lo -rpath $(PYTHON_SITE_PKG) L. -L.libs -lunbound
 
 util/config_file.c:	util/configparser.h
 util/configlexer.c:  $(srcdir)/util/configlexer.lex util/configparser.h
diff --git a/compat/arc4_lock.c b/compat/arc4_lock.c
index ce8bb4168d64..faa743d15baa 100644
--- a/compat/arc4_lock.c
+++ b/compat/arc4_lock.c
@@ -53,8 +53,10 @@ static int arc4lockinit = 0;
 
 void _ARC4_LOCK(void)
 {
-	if(!arc4lockinit)
+	if(!arc4lockinit) {
+		arc4lockinit = 1;
 		lock_quick_init(&arc4lock);
+	}
 	lock_quick_lock(&arc4lock);
 }
 
diff --git a/compat/getentropy_linux.c b/compat/getentropy_linux.c
index d51d7952d8c3..32d58a7cdbb9 100644
--- a/compat/getentropy_linux.c
+++ b/compat/getentropy_linux.c
@@ -48,6 +48,7 @@
 #include <time.h>
 #include <openssl/sha.h>
 
+#include <linux/types.h>
 #include <linux/random.h>
 #include <linux/sysctl.h>
 #ifdef HAVE_GETAUXVAL
@@ -77,7 +78,7 @@ extern int main(int, char *argv[]);
 #endif
 static int gotdata(char *buf, size_t len);
 static int getentropy_urandom(void *buf, size_t len);
-#ifdef CTL_MAXNAME
+#ifdef SYS__sysctl
 static int getentropy_sysctl(void *buf, size_t len);
 #endif
 static int getentropy_fallback(void *buf, size_t len);
@@ -102,7 +103,7 @@ getentropy(void *buf, size_t len)
 	if (ret != -1)
 		return (ret);
 
-#ifdef CTL_MAXNAME
+#ifdef SYS__sysctl
 	/*
 	 * Try to use sysctl CTL_KERN, KERN_RANDOM, RANDOM_UUID.
 	 * sysctl is a failsafe API, so it guarantees a result.  This
@@ -124,7 +125,7 @@ getentropy(void *buf, size_t len)
 	ret = getentropy_sysctl(buf, len);
 	if (ret != -1)
 		return (ret);
-#endif /* CTL_MAXNAME */
+#endif /* SYS__sysctl */
 
 	/*
 	 * Entropy collection via /dev/urandom and sysctl have failed.
@@ -235,7 +236,7 @@ getentropy_urandom(void *buf, size_t len)
 	return -1;
 }
 
-#ifdef CTL_MAXNAME
+#ifdef SYS__sysctl
 static int
 getentropy_sysctl(void *buf, size_t len)
 {
@@ -265,7 +266,7 @@ getentropy_sysctl(void *buf, size_t len)
 	errno = EIO;
 	return -1;
 }
-#endif /* CTL_MAXNAME */
+#endif /* SYS__sysctl */
 
 static int cl[] = {
 	CLOCK_REALTIME,
diff --git a/compat/getentropy_win.c b/compat/getentropy_win.c
index 9dc55891e393..71fb955e7f90 100644
--- a/compat/getentropy_win.c
+++ b/compat/getentropy_win.c
@@ -41,9 +41,9 @@ getentropy(void *buf, size_t len)
 	}
 
 	if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL,
-	    CRYPT_VERIFYCONTEXT) != 0)
+	    CRYPT_VERIFYCONTEXT) == 0)
 		goto fail;
-	if (CryptGenRandom(provider, len, buf) != 0) {
+	if (CryptGenRandom(provider, len, buf) == 0) {
 		CryptReleaseContext(provider, 0);
 		goto fail;
 	}
diff --git a/config.h.in b/config.h.in
index 5f8f8a992de7..2b7770b5c23a 100644
--- a/config.h.in
+++ b/config.h.in
@@ -1,8 +1,5 @@
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
-/* define if a library can reference the 'main' symbol */
-#undef CAN_REFERENCE_MAIN
-
 /* Directory to chroot to */
 #undef CHROOT_DIR
 
diff --git a/configure b/configure
index 32ad5f4f3cc2..bdfc14f22052 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for unbound 1.5.0.
+# Generated by GNU Autoconf 2.69 for unbound 1.5.1.
 #
 # Report bugs to <unbound-bugs@nlnetlabs.nl>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='unbound'
 PACKAGE_TARNAME='unbound'
-PACKAGE_VERSION='1.5.0'
-PACKAGE_STRING='unbound 1.5.0'
+PACKAGE_VERSION='1.5.1'
+PACKAGE_STRING='unbound 1.5.1'
 PACKAGE_BUGREPORT='unbound-bugs@nlnetlabs.nl'
 PACKAGE_URL=''
 
@@ -1387,7 +1387,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures unbound 1.5.0 to adapt to many kinds of systems.
+\`configure' configures unbound 1.5.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1452,7 +1452,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of unbound 1.5.0:";;
+     short | recursive ) echo "Configuration of unbound 1.5.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1627,7 +1627,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-unbound configure 1.5.0
+unbound configure 1.5.1
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2336,7 +2336,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by unbound $as_me 1.5.0, which was
+It was created by unbound $as_me 1.5.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2688,7 +2688,7 @@ UNBOUND_VERSION_MAJOR=1
 
 UNBOUND_VERSION_MINOR=5
 
-UNBOUND_VERSION_MICRO=0
+UNBOUND_VERSION_MICRO=1
 
 
 LIBUNBOUND_CURRENT=5
@@ -2732,6 +2732,7 @@ LIBUNBOUND_AGE=3
 # 1.4.21 had 4:1:2
 # 1.4.22 had 4:1:2
 # 1.5.0 had 5:3:3 # adds ub_ctx_add_ta_autr
+# 1.5.1 had 5:4:3
 
 #   Current  -- the number of the binary API that we're implementing
 #   Revision -- which iteration of the implementation of the binary
@@ -18312,1411 +18313,6 @@ fi
 
 			;;
 			esac
-			# generate libtool to test if linking main
-			# from a dynamic library works.
-			: ${CONFIG_LT=./config.lt}
-{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_LT" >&5
-$as_echo "$as_me: creating $CONFIG_LT" >&6;}
-as_write_fail=0
-cat >"$CONFIG_LT" <<_ASEOF || as_write_fail=1
-#! $SHELL
-# Generated by $as_me.
-# Run this file to recreate a libtool stub with the current configuration.
-SHELL=\${CONFIG_SHELL-$SHELL}
-export SHELL
-_ASEOF
-cat >>"$CONFIG_LT" <<\_ASEOF || as_write_fail=1
-## -------------------- ##
-## M4sh Initialization. ##
-## -------------------- ##
-
-# Be more Bourne compatible
-DUALCASE=1; export DUALCASE # for MKS sh
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
-  emulate sh
-  NULLCMD=:
-  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
-  # is contrary to our usage.  Disable this feature.
-  alias -g '${1+"$@"}'='"$@"'
-  setopt NO_GLOB_SUBST
-else
-  case `(set -o) 2>/dev/null` in #(
-  *posix*) :
-    set -o posix ;; #(
-  *) :
-     ;;
-esac
-fi
-
-
-as_nl='
-'
-export as_nl
-# Printing a long string crashes Solaris 7 /usr/bin/printf.
-as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
-as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
-# Prefer a ksh shell builtin over an external printf program on Solaris,
-# but without wasting forks for bash or zsh.
-if test -z "$BASH_VERSION$ZSH_VERSION" \
-    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='print -r --'
-  as_echo_n='print -rn --'
-elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
-  as_echo='printf %s\n'
-  as_echo_n='printf %s'
-else
-  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
-    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
-    as_echo_n='/usr/ucb/echo -n'
-  else
-    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
-    as_echo_n_body='eval
-      arg=$1;
-      case $arg in #(
-      *"$as_nl"*)
-	expr "X$arg" : "X\\(.*\\)$as_nl";
-	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
-      esac;
-      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
-    '
-    export as_echo_n_body
-    as_echo_n='sh -c $as_echo_n_body as_echo'
-  fi
-  export as_echo_body
-  as_echo='sh -c $as_echo_body as_echo'
-fi
-
-# The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
-  PATH_SEPARATOR=:
-  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
-    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
-      PATH_SEPARATOR=';'
-  }
-fi
-
-
-# IFS
-# We need space, tab and new line, in precisely that order.  Quoting is
-# there to prevent editors from complaining about space-tab.
-# (If _AS_PATH_WALK were called with IFS unset, it would disable word
-# splitting by setting IFS to empty value.)
-IFS=" ""	$as_nl"
-
-# Find who we are.  Look in the path if we contain no directory separator.
-as_myself=
-case $0 in #((
-  *[\\/]* ) as_myself=$0 ;;
-  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
-  done
-IFS=$as_save_IFS
-
-     ;;
-esac
-# We did not find ourselves, most probably we were run as `sh COMMAND'
-# in which case we are not to be found in the path.
-if test "x$as_myself" = x; then
-  as_myself=$0
-fi
-if test ! -f "$as_myself"; then
-  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
-  exit 1
-fi
-
-# Unset variables that we do not need and which cause bugs (e.g. in
-# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
-# suppresses any "Segmentation fault" message there.  '((' could
-# trigger a bug in pdksh 5.2.14.
-for as_var in BASH_ENV ENV MAIL MAILPATH
-do eval test x\${$as_var+set} = xset \
-  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
-done
-PS1='$ '
-PS2='> '
-PS4='+ '
-
-# NLS nuisances.
-LC_ALL=C
-export LC_ALL
-LANGUAGE=C
-export LANGUAGE
-
-# CDPATH.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-
-
-# as_fn_error STATUS ERROR [LINENO LOG_FD]
-# ----------------------------------------
-# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
-# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
-# script with STATUS, using 1 if that was 0.
-as_fn_error ()
-{
-  as_status=$1; test $as_status -eq 0 && as_status=1
-  if test "$4"; then
-    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
-  fi
-  $as_echo "$as_me: error: $2" >&2
-  as_fn_exit $as_status
-} # as_fn_error
-
-
-# as_fn_set_status STATUS
-# -----------------------
-# Set $? to STATUS, without forking.
-as_fn_set_status ()
-{
-  return $1
-} # as_fn_set_status
-
-# as_fn_exit STATUS
-# -----------------
-# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
-as_fn_exit ()
-{
-  set +e
-  as_fn_set_status $1
-  exit $1
-} # as_fn_exit
-
-# as_fn_unset VAR
-# ---------------
-# Portably unset VAR.
-as_fn_unset ()
-{
-  { eval $1=; unset $1;}
-}
-as_unset=as_fn_unset
-# as_fn_append VAR VALUE
-# ----------------------
-# Append the text in VALUE to the end of the definition contained in VAR. Take
-# advantage of any shell optimizations that allow amortized linear growth over
-# repeated appends, instead of the typical quadratic growth present in naive
-# implementations.
-if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
-  eval 'as_fn_append ()
-  {
-    eval $1+=\$2
-  }'
-else
-  as_fn_append ()
-  {
-    eval $1=\$$1\$2
-  }
-fi # as_fn_append
-
-# as_fn_arith ARG...
-# ------------------
-# Perform arithmetic evaluation on the ARGs, and store the result in the
-# global $as_val. Take advantage of shells that can avoid forks. The arguments
-# must be portable across $(()) and expr.
-if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
-  eval 'as_fn_arith ()
-  {
-    as_val=$(( $* ))
-  }'
-else
-  as_fn_arith ()
-  {
-    as_val=`expr "$@" || test $? -eq 1`
-  }
-fi # as_fn_arith
-
-
-if expr a : '\(a\)' >/dev/null 2>&1 &&
-   test "X`expr 00001 : '.*\(...\)'`" = X001; then
-  as_expr=expr
-else
-  as_expr=false
-fi
-
-if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
-  as_basename=basename
-else
-  as_basename=false
-fi
-
-if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
-  as_dirname=dirname
-else
-  as_dirname=false
-fi
-
-as_me=`$as_basename -- "$0" ||
-$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
-	 X"$0" : 'X\(//\)$' \| \
-	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X/"$0" |
-    sed '/^.*\/\([^/][^/]*\)\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\/\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-
-# Avoid depending upon Character Ranges.
-as_cr_letters='abcdefghijklmnopqrstuvwxyz'
-as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
-as_cr_Letters=$as_cr_letters$as_cr_LETTERS
-as_cr_digits='0123456789'
-as_cr_alnum=$as_cr_Letters$as_cr_digits
-
-ECHO_C= ECHO_N= ECHO_T=
-case `echo -n x` in #(((((
--n*)
-  case `echo 'xy\c'` in
-  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
-  xy)  ECHO_C='\c';;
-  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
-       ECHO_T='	';;
-  esac;;
-*)
-  ECHO_N='-n';;
-esac
-
-rm -f conf$$ conf$$.exe conf$$.file
-if test -d conf$$.dir; then
-  rm -f conf$$.dir/conf$$.file
-else
-  rm -f conf$$.dir
-  mkdir conf$$.dir 2>/dev/null
-fi
-if (echo >conf$$.file) 2>/dev/null; then
-  if ln -s conf$$.file conf$$ 2>/dev/null; then
-    as_ln_s='ln -s'
-    # ... but there are two gotchas:
-    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
-    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -pR'.
-    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -pR'
-  elif ln conf$$.file conf$$ 2>/dev/null; then
-    as_ln_s=ln
-  else
-    as_ln_s='cp -pR'
-  fi
-else
-  as_ln_s='cp -pR'
-fi
-rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
-rmdir conf$$.dir 2>/dev/null
-
-
-# as_fn_mkdir_p
-# -------------
-# Create "$as_dir" as a directory, including parents if necessary.
-as_fn_mkdir_p ()
-{
-
-  case $as_dir in #(
-  -*) as_dir=./$as_dir;;
-  esac
-  test -d "$as_dir" || eval $as_mkdir_p || {
-    as_dirs=
-    while :; do
-      case $as_dir in #(
-      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
-      *) as_qdir=$as_dir;;
-      esac
-      as_dirs="'$as_qdir' $as_dirs"
-      as_dir=`$as_dirname -- "$as_dir" ||
-$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$as_dir" : 'X\(//\)[^/]' \| \
-	 X"$as_dir" : 'X\(//\)$' \| \
-	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$as_dir" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)[^/].*/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\).*/{
-	    s//\1/
-	    q
-	  }
-	  s/.*/./; q'`
-      test -d "$as_dir" && break
-    done
-    test -z "$as_dirs" || eval "mkdir $as_dirs"
-  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
-
-
-} # as_fn_mkdir_p
-if mkdir -p . 2>/dev/null; then
-  as_mkdir_p='mkdir -p "$as_dir"'
-else
-  test -d ./-p && rmdir ./-p
-  as_mkdir_p=false
-fi
-
-
-# as_fn_executable_p FILE
-# -----------------------
-# Test if FILE is an executable regular file.
-as_fn_executable_p ()
-{
-  test -f "$1" && test -x "$1"
-} # as_fn_executable_p
-as_test_x='test -x'
-as_executable_p=as_fn_executable_p
-
-# Sed expression to map a string onto a valid CPP name.
-as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
-
-# Sed expression to map a string onto a valid variable name.
-as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
-
-
-exec 6>&1
-## --------------------------------- ##
-## Main body of "$CONFIG_LT" script. ##
-## --------------------------------- ##
-_ASEOF
-test $as_write_fail = 0 && chmod +x "$CONFIG_LT"
-
-cat >>"$CONFIG_LT" <<\_LTEOF
-lt_cl_silent=false
-exec 5>>config.log
-{
-  echo
-  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
-## Running $as_me. ##
-_ASBOX
-} >&5
-
-lt_cl_help="\
-\`$as_me' creates a local libtool stub from the current configuration,
-for use in further configure time tests before the real libtool is
-generated.
-
-Usage: $0 [OPTIONS]
-
-  -h, --help      print this help, then exit
-  -V, --version   print version number, then exit
-  -q, --quiet     do not print progress messages
-  -d, --debug     don't remove temporary files
-
-Report bugs to <bug-libtool@gnu.org>."
-
-lt_cl_version="\
-unbound config.lt 1.5.0
-configured by $0, generated by GNU Autoconf 2.69.
-
-Copyright (C) 2011 Free Software Foundation, Inc.
-This config.lt script is free software; the Free Software Foundation
-gives unlimited permision to copy, distribute and modify it."
-
-while test $# != 0
-do
-  case $1 in
-    --version | --v* | -V )
-      echo "$lt_cl_version"; exit 0 ;;
-    --help | --h* | -h )
-      echo "$lt_cl_help"; exit 0 ;;
-    --debug | --d* | -d )
-      debug=: ;;
-    --quiet | --q* | --silent | --s* | -q )
-      lt_cl_silent=: ;;
-
-    -*) as_fn_error $? "unrecognized option: $1
-Try \`$0 --help' for more information." "$LINENO" 5 ;;
-
-    *) as_fn_error $? "unrecognized argument: $1
-Try \`$0 --help' for more information." "$LINENO" 5 ;;
-  esac
-  shift
-done
-
-if $lt_cl_silent; then
-  exec 6>/dev/null
-fi
-_LTEOF
-
-cat >>"$CONFIG_LT" <<_LTEOF
-
-
-# The HP-UX ksh and POSIX shell print the target directory to stdout
-# if CDPATH is set.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-
-sed_quote_subst='$sed_quote_subst'
-double_quote_subst='$double_quote_subst'
-delay_variable_subst='$delay_variable_subst'
-macro_version='`$ECHO "$macro_version" | $SED "$delay_single_quote_subst"`'
-macro_revision='`$ECHO "$macro_revision" | $SED "$delay_single_quote_subst"`'
-enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
-enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
-pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
-enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
-SHELL='`$ECHO "$SHELL" | $SED "$delay_single_quote_subst"`'
-ECHO='`$ECHO "$ECHO" | $SED "$delay_single_quote_subst"`'
-PATH_SEPARATOR='`$ECHO "$PATH_SEPARATOR" | $SED "$delay_single_quote_subst"`'
-host_alias='`$ECHO "$host_alias" | $SED "$delay_single_quote_subst"`'
-host='`$ECHO "$host" | $SED "$delay_single_quote_subst"`'
-host_os='`$ECHO "$host_os" | $SED "$delay_single_quote_subst"`'
-build_alias='`$ECHO "$build_alias" | $SED "$delay_single_quote_subst"`'
-build='`$ECHO "$build" | $SED "$delay_single_quote_subst"`'
-build_os='`$ECHO "$build_os" | $SED "$delay_single_quote_subst"`'
-SED='`$ECHO "$SED" | $SED "$delay_single_quote_subst"`'
-Xsed='`$ECHO "$Xsed" | $SED "$delay_single_quote_subst"`'
-GREP='`$ECHO "$GREP" | $SED "$delay_single_quote_subst"`'
-EGREP='`$ECHO "$EGREP" | $SED "$delay_single_quote_subst"`'
-FGREP='`$ECHO "$FGREP" | $SED "$delay_single_quote_subst"`'
-LD='`$ECHO "$LD" | $SED "$delay_single_quote_subst"`'
-NM='`$ECHO "$NM" | $SED "$delay_single_quote_subst"`'
-LN_S='`$ECHO "$LN_S" | $SED "$delay_single_quote_subst"`'
-max_cmd_len='`$ECHO "$max_cmd_len" | $SED "$delay_single_quote_subst"`'
-ac_objext='`$ECHO "$ac_objext" | $SED "$delay_single_quote_subst"`'
-exeext='`$ECHO "$exeext" | $SED "$delay_single_quote_subst"`'
-lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`'
-lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`'
-lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`'
-lt_cv_to_host_file_cmd='`$ECHO "$lt_cv_to_host_file_cmd" | $SED "$delay_single_quote_subst"`'
-lt_cv_to_tool_file_cmd='`$ECHO "$lt_cv_to_tool_file_cmd" | $SED "$delay_single_quote_subst"`'
-reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
-reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
-OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`'
-deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
-file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
-file_magic_glob='`$ECHO "$file_magic_glob" | $SED "$delay_single_quote_subst"`'
-want_nocaseglob='`$ECHO "$want_nocaseglob" | $SED "$delay_single_quote_subst"`'
-DLLTOOL='`$ECHO "$DLLTOOL" | $SED "$delay_single_quote_subst"`'
-sharedlib_from_linklib_cmd='`$ECHO "$sharedlib_from_linklib_cmd" | $SED "$delay_single_quote_subst"`'
-AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
-AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
-archiver_list_spec='`$ECHO "$archiver_list_spec" | $SED "$delay_single_quote_subst"`'
-STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
-RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`'
-old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`'
-old_postuninstall_cmds='`$ECHO "$old_postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
-old_archive_cmds='`$ECHO "$old_archive_cmds" | $SED "$delay_single_quote_subst"`'
-lock_old_archive_extraction='`$ECHO "$lock_old_archive_extraction" | $SED "$delay_single_quote_subst"`'
-CC='`$ECHO "$CC" | $SED "$delay_single_quote_subst"`'
-CFLAGS='`$ECHO "$CFLAGS" | $SED "$delay_single_quote_subst"`'
-compiler='`$ECHO "$compiler" | $SED "$delay_single_quote_subst"`'
-GCC='`$ECHO "$GCC" | $SED "$delay_single_quote_subst"`'
-lt_cv_sys_global_symbol_pipe='`$ECHO "$lt_cv_sys_global_symbol_pipe" | $SED "$delay_single_quote_subst"`'
-lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`'
-lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`'
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`'
-nm_file_list_spec='`$ECHO "$nm_file_list_spec" | $SED "$delay_single_quote_subst"`'
-lt_sysroot='`$ECHO "$lt_sysroot" | $SED "$delay_single_quote_subst"`'
-objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`'
-MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`'
-lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`'
-lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`'
-lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
-lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`'
-lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`'
-need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`'
-MANIFEST_TOOL='`$ECHO "$MANIFEST_TOOL" | $SED "$delay_single_quote_subst"`'
-DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`'
-NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`'
-LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`'
-OTOOL='`$ECHO "$OTOOL" | $SED "$delay_single_quote_subst"`'
-OTOOL64='`$ECHO "$OTOOL64" | $SED "$delay_single_quote_subst"`'
-libext='`$ECHO "$libext" | $SED "$delay_single_quote_subst"`'
-shrext_cmds='`$ECHO "$shrext_cmds" | $SED "$delay_single_quote_subst"`'
-extract_expsyms_cmds='`$ECHO "$extract_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
-archive_cmds_need_lc='`$ECHO "$archive_cmds_need_lc" | $SED "$delay_single_quote_subst"`'
-enable_shared_with_static_runtimes='`$ECHO "$enable_shared_with_static_runtimes" | $SED "$delay_single_quote_subst"`'
-export_dynamic_flag_spec='`$ECHO "$export_dynamic_flag_spec" | $SED "$delay_single_quote_subst"`'
-whole_archive_flag_spec='`$ECHO "$whole_archive_flag_spec" | $SED "$delay_single_quote_subst"`'
-compiler_needs_object='`$ECHO "$compiler_needs_object" | $SED "$delay_single_quote_subst"`'
-old_archive_from_new_cmds='`$ECHO "$old_archive_from_new_cmds" | $SED "$delay_single_quote_subst"`'
-old_archive_from_expsyms_cmds='`$ECHO "$old_archive_from_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
-archive_cmds='`$ECHO "$archive_cmds" | $SED "$delay_single_quote_subst"`'
-archive_expsym_cmds='`$ECHO "$archive_expsym_cmds" | $SED "$delay_single_quote_subst"`'
-module_cmds='`$ECHO "$module_cmds" | $SED "$delay_single_quote_subst"`'
-module_expsym_cmds='`$ECHO "$module_expsym_cmds" | $SED "$delay_single_quote_subst"`'
-with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`'
-allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
-no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
-hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
-hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
-hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
-hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
-hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`'
-hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`'
-hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
-inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
-link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
-always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
-export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
-exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
-include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
-prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
-postlink_cmds='`$ECHO "$postlink_cmds" | $SED "$delay_single_quote_subst"`'
-file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
-variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
-need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
-need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`'
-version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`'
-runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`'
-shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`'
-shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`'
-libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`'
-library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`'
-soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`'
-install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`'
-postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`'
-postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
-finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`'
-finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`'
-hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`'
-sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`'
-sys_lib_dlsearch_path_spec='`$ECHO "$sys_lib_dlsearch_path_spec" | $SED "$delay_single_quote_subst"`'
-hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`'
-enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`'
-enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`'
-enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`'
-old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`'
-striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`'
-
-LTCC='$LTCC'
-LTCFLAGS='$LTCFLAGS'
-compiler='$compiler_DEFAULT'
-
-# A function that is used when there is no print builtin or printf.
-func_fallback_echo ()
-{
-  eval 'cat <<_LTECHO_EOF
-\$1
-_LTECHO_EOF'
-}
-
-# Quote evaled strings.
-for var in SHELL \
-ECHO \
-PATH_SEPARATOR \
-SED \
-GREP \
-EGREP \
-FGREP \
-LD \
-NM \
-LN_S \
-lt_SP2NL \
-lt_NL2SP \
-reload_flag \
-OBJDUMP \
-deplibs_check_method \
-file_magic_cmd \
-file_magic_glob \
-want_nocaseglob \
-DLLTOOL \
-sharedlib_from_linklib_cmd \
-AR \
-AR_FLAGS \
-archiver_list_spec \
-STRIP \
-RANLIB \
-CC \
-CFLAGS \
-compiler \
-lt_cv_sys_global_symbol_pipe \
-lt_cv_sys_global_symbol_to_cdecl \
-lt_cv_sys_global_symbol_to_c_name_address \
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
-nm_file_list_spec \
-lt_prog_compiler_no_builtin_flag \
-lt_prog_compiler_pic \
-lt_prog_compiler_wl \
-lt_prog_compiler_static \
-lt_cv_prog_compiler_c_o \
-need_locks \
-MANIFEST_TOOL \
-DSYMUTIL \
-NMEDIT \
-LIPO \
-OTOOL \
-OTOOL64 \
-shrext_cmds \
-export_dynamic_flag_spec \
-whole_archive_flag_spec \
-compiler_needs_object \
-with_gnu_ld \
-allow_undefined_flag \
-no_undefined_flag \
-hardcode_libdir_flag_spec \
-hardcode_libdir_separator \
-exclude_expsyms \
-include_expsyms \
-file_list_spec \
-variables_saved_for_relink \
-libname_spec \
-library_names_spec \
-soname_spec \
-install_override_mode \
-finish_eval \
-old_striplib \
-striplib; do
-    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
-    *[\\\\\\\`\\"\\\$]*)
-      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
-      ;;
-    *)
-      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
-      ;;
-    esac
-done
-
-# Double-quote double-evaled strings.
-for var in reload_cmds \
-old_postinstall_cmds \
-old_postuninstall_cmds \
-old_archive_cmds \
-extract_expsyms_cmds \
-old_archive_from_new_cmds \
-old_archive_from_expsyms_cmds \
-archive_cmds \
-archive_expsym_cmds \
-module_cmds \
-module_expsym_cmds \
-export_symbols_cmds \
-prelink_cmds \
-postlink_cmds \
-postinstall_cmds \
-postuninstall_cmds \
-finish_cmds \
-sys_lib_search_path_spec \
-sys_lib_dlsearch_path_spec; do
-    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
-    *[\\\\\\\`\\"\\\$]*)
-      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
-      ;;
-    *)
-      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
-      ;;
-    esac
-done
-
-ac_aux_dir='$ac_aux_dir'
-xsi_shell='$xsi_shell'
-lt_shell_append='$lt_shell_append'
-
-# See if we are running on zsh, and set the options which allow our
-# commands through without removal of \ escapes INIT.
-if test -n "\${ZSH_VERSION+set}" ; then
-   setopt NO_GLOB_SUBST
-fi
-
-
-    PACKAGE='$PACKAGE'
-    VERSION='$VERSION'
-    TIMESTAMP='$TIMESTAMP'
-    RM='$RM'
-    ofile='$ofile'
-
-
-
-_LTEOF
-
-cat >>"$CONFIG_LT" <<\_LTEOF
-{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $ofile" >&5
-$as_echo "$as_me: creating $ofile" >&6;}
-
-
-    # See if we are running on zsh, and set the options which allow our
-    # commands through without removal of \ escapes.
-    if test -n "${ZSH_VERSION+set}" ; then
-      setopt NO_GLOB_SUBST
-    fi
-
-    cfgfile="${ofile}T"
-    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
-    $RM "$cfgfile"
-
-    cat <<_LT_EOF >> "$cfgfile"
-#! $SHELL
-
-# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
-# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
-# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
-# NOTE: Changes made to this file will be lost: look at ltmain.sh.
-#
-#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-#                 2006, 2007, 2008, 2009, 2010, 2011 Free Software
-#                 Foundation, Inc.
-#   Written by Gordon Matzigkeit, 1996
-#
-#   This file is part of GNU Libtool.
-#
-# GNU Libtool is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License, or (at your option) any later version.
-#
-# As a special exception to the GNU General Public License,
-# if you distribute this file as part of a program or library that
-# is built using GNU Libtool, you may include this file under the
-# same distribution terms that you use for the rest of that program.
-#
-# GNU Libtool is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING.  If not, a copy
-# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
-# obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
-
-# The names of the tagged configurations supported by this script.
-available_tags=""
-
-# ### BEGIN LIBTOOL CONFIG
-
-# Which release of libtool.m4 was used?
-macro_version=$macro_version
-macro_revision=$macro_revision
-
-# Whether or not to build shared libraries.
-build_libtool_libs=$enable_shared
-
-# Whether or not to build static libraries.
-build_old_libs=$enable_static
-
-# What type of objects to build.
-pic_mode=$pic_mode
-
-# Whether or not to optimize for fast installation.
-fast_install=$enable_fast_install
-
-# Shell to use when invoking shell scripts.
-SHELL=$lt_SHELL
-
-# An echo program that protects backslashes.
-ECHO=$lt_ECHO
-
-# The PATH separator for the build system.
-PATH_SEPARATOR=$lt_PATH_SEPARATOR
-
-# The host system.
-host_alias=$host_alias
-host=$host
-host_os=$host_os
-
-# The build system.
-build_alias=$build_alias
-build=$build
-build_os=$build_os
-
-# A sed program that does not truncate output.
-SED=$lt_SED
-
-# Sed that helps us avoid accidentally triggering echo(1) options like -n.
-Xsed="\$SED -e 1s/^X//"
-
-# A grep program that handles long lines.
-GREP=$lt_GREP
-
-# An ERE matcher.
-EGREP=$lt_EGREP
-
-# A literal string matcher.
-FGREP=$lt_FGREP
-
-# A BSD- or MS-compatible name lister.
-NM=$lt_NM
-
-# Whether we need soft or hard links.
-LN_S=$lt_LN_S
-
-# What is the maximum length of a command?
-max_cmd_len=$max_cmd_len
-
-# Object file suffix (normally "o").
-objext=$ac_objext
-
-# Executable file suffix (normally "").
-exeext=$exeext
-
-# whether the shell understands "unset".
-lt_unset=$lt_unset
-
-# turn spaces into newlines.
-SP2NL=$lt_lt_SP2NL
-
-# turn newlines into spaces.
-NL2SP=$lt_lt_NL2SP
-
-# convert \$build file names to \$host format.
-to_host_file_cmd=$lt_cv_to_host_file_cmd
-
-# convert \$build files to toolchain format.
-to_tool_file_cmd=$lt_cv_to_tool_file_cmd
-
-# An object symbol dumper.
-OBJDUMP=$lt_OBJDUMP
-
-# Method to check whether dependent libraries are shared objects.
-deplibs_check_method=$lt_deplibs_check_method
-
-# Command to use when deplibs_check_method = "file_magic".
-file_magic_cmd=$lt_file_magic_cmd
-
-# How to find potential files when deplibs_check_method = "file_magic".
-file_magic_glob=$lt_file_magic_glob
-
-# Find potential files using nocaseglob when deplibs_check_method = "file_magic".
-want_nocaseglob=$lt_want_nocaseglob
-
-# DLL creation program.
-DLLTOOL=$lt_DLLTOOL
-
-# Command to associate shared and link libraries.
-sharedlib_from_linklib_cmd=$lt_sharedlib_from_linklib_cmd
-
-# The archiver.
-AR=$lt_AR
-
-# Flags to create an archive.
-AR_FLAGS=$lt_AR_FLAGS
-
-# How to feed a file listing to the archiver.
-archiver_list_spec=$lt_archiver_list_spec
-
-# A symbol stripping program.
-STRIP=$lt_STRIP
-
-# Commands used to install an old-style archive.
-RANLIB=$lt_RANLIB
-old_postinstall_cmds=$lt_old_postinstall_cmds
-old_postuninstall_cmds=$lt_old_postuninstall_cmds
-
-# Whether to use a lock for old archive extraction.
-lock_old_archive_extraction=$lock_old_archive_extraction
-
-# A C compiler.
-LTCC=$lt_CC
-
-# LTCC compiler flags.
-LTCFLAGS=$lt_CFLAGS
-
-# Take the output of nm and produce a listing of raw symbols and C names.
-global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
-
-# Transform the output of nm in a proper C declaration.
-global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
-
-# Transform the output of nm in a C name address pair.
-global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
-
-# Transform the output of nm in a C name address pair when lib prefix is needed.
-global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
-
-# Specify filename containing input files for \$NM.
-nm_file_list_spec=$lt_nm_file_list_spec
-
-# The root where to search for dependent libraries,and in which our libraries should be installed.
-lt_sysroot=$lt_sysroot
-
-# The name of the directory that contains temporary libtool files.
-objdir=$objdir
-
-# Used to examine libraries when file_magic_cmd begins with "file".
-MAGIC_CMD=$MAGIC_CMD
-
-# Must we lock files when doing compilation?
-need_locks=$lt_need_locks
-
-# Manifest tool.
-MANIFEST_TOOL=$lt_MANIFEST_TOOL
-
-# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
-DSYMUTIL=$lt_DSYMUTIL
-
-# Tool to change global to local symbols on Mac OS X.
-NMEDIT=$lt_NMEDIT
-
-# Tool to manipulate fat objects and archives on Mac OS X.
-LIPO=$lt_LIPO
-
-# ldd/readelf like tool for Mach-O binaries on Mac OS X.
-OTOOL=$lt_OTOOL
-
-# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
-OTOOL64=$lt_OTOOL64
-
-# Old archive suffix (normally "a").
-libext=$libext
-
-# Shared library suffix (normally ".so").
-shrext_cmds=$lt_shrext_cmds
-
-# The commands to extract the exported symbol list from a shared archive.
-extract_expsyms_cmds=$lt_extract_expsyms_cmds
-
-# Variables whose values should be saved in libtool wrapper scripts and
-# restored at link time.
-variables_saved_for_relink=$lt_variables_saved_for_relink
-
-# Do we need the "lib" prefix for modules?
-need_lib_prefix=$need_lib_prefix
-
-# Do we need a version for libraries?
-need_version=$need_version
-
-# Library versioning type.
-version_type=$version_type
-
-# Shared library runtime path variable.
-runpath_var=$runpath_var
-
-# Shared library path variable.
-shlibpath_var=$shlibpath_var
-
-# Is shlibpath searched before the hard-coded library search path?
-shlibpath_overrides_runpath=$shlibpath_overrides_runpath
-
-# Format of library name prefix.
-libname_spec=$lt_libname_spec
-
-# List of archive names.  First name is the real one, the rest are links.
-# The last name is the one that the linker finds with -lNAME
-library_names_spec=$lt_library_names_spec
-
-# The coded name of the library, if different from the real name.
-soname_spec=$lt_soname_spec
-
-# Permission mode override for installation of shared libraries.
-install_override_mode=$lt_install_override_mode
-
-# Command to use after installation of a shared archive.
-postinstall_cmds=$lt_postinstall_cmds
-
-# Command to use after uninstallation of a shared archive.
-postuninstall_cmds=$lt_postuninstall_cmds
-
-# Commands used to finish a libtool library installation in a directory.
-finish_cmds=$lt_finish_cmds
-
-# As "finish_cmds", except a single script fragment to be evaled but
-# not shown.
-finish_eval=$lt_finish_eval
-
-# Whether we should hardcode library paths into libraries.
-hardcode_into_libs=$hardcode_into_libs
-
-# Compile-time system search path for libraries.
-sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
-
-# Run-time system search path for libraries.
-sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
-
-# Whether dlopen is supported.
-dlopen_support=$enable_dlopen
-
-# Whether dlopen of programs is supported.
-dlopen_self=$enable_dlopen_self
-
-# Whether dlopen of statically linked programs is supported.
-dlopen_self_static=$enable_dlopen_self_static
-
-# Commands to strip libraries.
-old_striplib=$lt_old_striplib
-striplib=$lt_striplib
-
-
-# The linker used to build libraries.
-LD=$lt_LD
-
-# How to create reloadable object files.
-reload_flag=$lt_reload_flag
-reload_cmds=$lt_reload_cmds
-
-# Commands used to build an old-style archive.
-old_archive_cmds=$lt_old_archive_cmds
-
-# A language specific compiler.
-CC=$lt_compiler
-
-# Is the compiler the GNU compiler?
-with_gcc=$GCC
-
-# Compiler flag to turn off builtin functions.
-no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
-
-# Additional compiler flags for building library objects.
-pic_flag=$lt_lt_prog_compiler_pic
-
-# How to pass a linker flag through the compiler.
-wl=$lt_lt_prog_compiler_wl
-
-# Compiler flag to prevent dynamic linking.
-link_static_flag=$lt_lt_prog_compiler_static
-
-# Does compiler simultaneously support -c and -o options?
-compiler_c_o=$lt_lt_cv_prog_compiler_c_o
-
-# Whether or not to add -lc for building shared libraries.
-build_libtool_need_lc=$archive_cmds_need_lc
-
-# Whether or not to disallow shared libs when runtime libs are static.
-allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
-
-# Compiler flag to allow reflexive dlopens.
-export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
-
-# Compiler flag to generate shared objects directly from archives.
-whole_archive_flag_spec=$lt_whole_archive_flag_spec
-
-# Whether the compiler copes with passing no objects directly.
-compiler_needs_object=$lt_compiler_needs_object
-
-# Create an old-style archive from a shared archive.
-old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
-
-# Create a temporary old-style archive to link instead of a shared archive.
-old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
-
-# Commands used to build a shared archive.
-archive_cmds=$lt_archive_cmds
-archive_expsym_cmds=$lt_archive_expsym_cmds
-
-# Commands used to build a loadable module if different from building
-# a shared archive.
-module_cmds=$lt_module_cmds
-module_expsym_cmds=$lt_module_expsym_cmds
-
-# Whether we are building with GNU ld or not.
-with_gnu_ld=$lt_with_gnu_ld
-
-# Flag that allows shared libraries with undefined symbols to be built.
-allow_undefined_flag=$lt_allow_undefined_flag
-
-# Flag that enforces no undefined symbols.
-no_undefined_flag=$lt_no_undefined_flag
-
-# Flag to hardcode \$libdir into a binary during linking.
-# This must work even if \$libdir does not exist
-hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
-
-# Whether we need a single "-rpath" flag with a separated argument.
-hardcode_libdir_separator=$lt_hardcode_libdir_separator
-
-# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
-# DIR into the resulting binary.
-hardcode_direct=$hardcode_direct
-
-# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
-# DIR into the resulting binary and the resulting library dependency is
-# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
-# library is relocated.
-hardcode_direct_absolute=$hardcode_direct_absolute
-
-# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
-# into the resulting binary.
-hardcode_minus_L=$hardcode_minus_L
-
-# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
-# into the resulting binary.
-hardcode_shlibpath_var=$hardcode_shlibpath_var
-
-# Set to "yes" if building a shared library automatically hardcodes DIR
-# into the library and all subsequent libraries and executables linked
-# against it.
-hardcode_automatic=$hardcode_automatic
-
-# Set to yes if linker adds runtime paths of dependent libraries
-# to runtime path list.
-inherit_rpath=$inherit_rpath
-
-# Whether libtool must link a program against all its dependency libraries.
-link_all_deplibs=$link_all_deplibs
-
-# Set to "yes" if exported symbols are required.
-always_export_symbols=$always_export_symbols
-
-# The commands to list exported symbols.
-export_symbols_cmds=$lt_export_symbols_cmds
-
-# Symbols that should not be listed in the preloaded symbols.
-exclude_expsyms=$lt_exclude_expsyms
-
-# Symbols that must always be exported.
-include_expsyms=$lt_include_expsyms
-
-# Commands necessary for linking programs (against libraries) with templates.
-prelink_cmds=$lt_prelink_cmds
-
-# Commands necessary for finishing linking programs.
-postlink_cmds=$lt_postlink_cmds
-
-# Specify filename containing input files.
-file_list_spec=$lt_file_list_spec
-
-# How to hardcode a shared library path into an executable.
-hardcode_action=$hardcode_action
-
-# ### END LIBTOOL CONFIG
-
-_LT_EOF
-
-  case $host_os in
-  aix3*)
-    cat <<\_LT_EOF >> "$cfgfile"
-# AIX sometimes has problems with the GCC collect2 program.  For some
-# reason, if we set the COLLECT_NAMES environment variable, the problems
-# vanish in a puff of smoke.
-if test "X${COLLECT_NAMES+set}" != Xset; then
-  COLLECT_NAMES=
-  export COLLECT_NAMES
-fi
-_LT_EOF
-    ;;
-  esac
-
-
-ltmain="$ac_aux_dir/ltmain.sh"
-
-
-  # We use sed instead of cat because bash on DJGPP gets confused if
-  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
-  # text mode, it properly converts lines to CR/LF.  This bash problem
-  # is reportedly fixed, but why not run on old versions too?
-  sed '$q' "$ltmain" >> "$cfgfile" \
-     || (rm -f "$cfgfile"; exit 1)
-
-  if test x"$xsi_shell" = xyes; then
-  sed -e '/^func_dirname ()$/,/^} # func_dirname /c\
-func_dirname ()\
-{\
-\    case ${1} in\
-\      */*) func_dirname_result="${1%/*}${2}" ;;\
-\      *  ) func_dirname_result="${3}" ;;\
-\    esac\
-} # Extended-shell func_dirname implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_basename ()$/,/^} # func_basename /c\
-func_basename ()\
-{\
-\    func_basename_result="${1##*/}"\
-} # Extended-shell func_basename implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_dirname_and_basename ()$/,/^} # func_dirname_and_basename /c\
-func_dirname_and_basename ()\
-{\
-\    case ${1} in\
-\      */*) func_dirname_result="${1%/*}${2}" ;;\
-\      *  ) func_dirname_result="${3}" ;;\
-\    esac\
-\    func_basename_result="${1##*/}"\
-} # Extended-shell func_dirname_and_basename implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_stripname ()$/,/^} # func_stripname /c\
-func_stripname ()\
-{\
-\    # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are\
-\    # positional parameters, so assign one to ordinary parameter first.\
-\    func_stripname_result=${3}\
-\    func_stripname_result=${func_stripname_result#"${1}"}\
-\    func_stripname_result=${func_stripname_result%"${2}"}\
-} # Extended-shell func_stripname implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_split_long_opt ()$/,/^} # func_split_long_opt /c\
-func_split_long_opt ()\
-{\
-\    func_split_long_opt_name=${1%%=*}\
-\    func_split_long_opt_arg=${1#*=}\
-} # Extended-shell func_split_long_opt implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_split_short_opt ()$/,/^} # func_split_short_opt /c\
-func_split_short_opt ()\
-{\
-\    func_split_short_opt_arg=${1#??}\
-\    func_split_short_opt_name=${1%"$func_split_short_opt_arg"}\
-} # Extended-shell func_split_short_opt implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_lo2o ()$/,/^} # func_lo2o /c\
-func_lo2o ()\
-{\
-\    case ${1} in\
-\      *.lo) func_lo2o_result=${1%.lo}.${objext} ;;\
-\      *)    func_lo2o_result=${1} ;;\
-\    esac\
-} # Extended-shell func_lo2o implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_xform ()$/,/^} # func_xform /c\
-func_xform ()\
-{\
-    func_xform_result=${1%.*}.lo\
-} # Extended-shell func_xform implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_arith ()$/,/^} # func_arith /c\
-func_arith ()\
-{\
-    func_arith_result=$(( $* ))\
-} # Extended-shell func_arith implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_len ()$/,/^} # func_len /c\
-func_len ()\
-{\
-    func_len_result=${#1}\
-} # Extended-shell func_len implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-fi
-
-if test x"$lt_shell_append" = xyes; then
-  sed -e '/^func_append ()$/,/^} # func_append /c\
-func_append ()\
-{\
-    eval "${1}+=\\${2}"\
-} # Extended-shell func_append implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  sed -e '/^func_append_quoted ()$/,/^} # func_append_quoted /c\
-func_append_quoted ()\
-{\
-\    func_quote_for_eval "${2}"\
-\    eval "${1}+=\\\\ \\$func_quote_for_eval_result"\
-} # Extended-shell func_append_quoted implementation' "$cfgfile" > $cfgfile.tmp \
-  && mv -f "$cfgfile.tmp" "$cfgfile" \
-    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
-  # Save a `func_append' function call where possible by direct use of '+='
-  sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
-    && mv -f "$cfgfile.tmp" "$cfgfile" \
-      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-  test 0 -eq $? || _lt_function_replace_fail=:
-else
-  # Save a `func_append' function call even when '+=' is not available
-  sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
-    && mv -f "$cfgfile.tmp" "$cfgfile" \
-      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-  test 0 -eq $? || _lt_function_replace_fail=:
-fi
-
-if test x"$_lt_function_replace_fail" = x":"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unable to substitute extended shell functions in $ofile" >&5
-$as_echo "$as_me: WARNING: Unable to substitute extended shell functions in $ofile" >&2;}
-fi
-
-
-   mv -f "$cfgfile" "$ofile" ||
-    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
-  chmod +x "$ofile"
-
-
-as_fn_exit 0
-_LTEOF
-chmod +x "$CONFIG_LT"
-
-# configure is writing to config.log, but config.lt does its own redirection,
-# appending to config.log, which fails on DOS, as config.log is still kept
-# open by configure.  Here we exec the FD to /dev/null, effectively closing
-# config.log, so it can be properly (re)opened and appended to by config.lt.
-lt_cl_success=:
-test "$silent" = yes &&
-  lt_config_lt_args="$lt_config_lt_args --quiet"
-exec 5>/dev/null
-$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
-exec 5>>config.log
-$lt_cl_success || as_fn_exit 1
-
-			{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if dynamic lib can refer to main" >&5
-$as_echo_n "checking if dynamic lib can refer to main... " >&6; }
-			cat >tmp.$$.def <<EOF
-myfunc
-EOF
-			cat >tmp.$$.c <<EOF
-int myfunc(void);
-extern int main(int, char *argv);
-int myfunc(void)
-{
-	return ((int)main) + 1;
-}
-EOF
-			mylibtool=./libtool
-			mylibdir=/usr/local/lib
-			myok=yes
-			$mylibtool --quiet --tag=CC --mode=compile $CC $CFLAGS -o tmp.$$.lo -c tmp.$$.c >/dev/null 2>&1
-			if test $? = 0; then myok=yes; else myok=no; fi
-			if test "$myok" = "yes"; then
-			$mylibtool --quiet --tag=CC --mode=link $CC $CFLAGS -version-info 1:0:0 -no-undefined -export-symbols tmp.$$.def -o libtmp$$.la tmp.$$.lo $LDFLAGS -rpath $mylibdir $LIBS >/dev/null 2>&1
-				if test $? = 0; then myok=yes; else myok=no; fi
-			fi
-			if test "$myok" = "yes"; then
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-$as_echo "#define CAN_REFERENCE_MAIN 1" >>confdefs.h
-
-			else
-				{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-			fi
-			$mylibtool --quiet --mode=clean rm -rf libtmp$$.la tmp.$$.lo
-			rm -f tmp.$$.def tmp.$$.c libtmp$$.la tmp.$$.lo tmp.$$.o
-
 		    fi
 
 fi
@@ -20156,7 +18752,7 @@ _ACEOF
 
 
 
-version=1.5.0
+version=1.5.1
 
 date=`date +'%b %e, %Y'`
 
@@ -20671,7 +19267,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by unbound $as_me 1.5.0, which was
+This file was extended by unbound $as_me 1.5.1, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20737,7 +19333,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-unbound config.status 1.5.0
+unbound config.status 1.5.1
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
@@ -21129,7 +19725,6 @@ fi
     RM='$RM'
     ofile='$ofile'
 
-ac_aux_dir='$ac_aux_dir'
 
 
 
diff --git a/configure.ac b/configure.ac
index 63a60b428a98..7e5da1a9f046 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@ sinclude(dnstap/dnstap.m4)
 # must be numbers. ac_defun because of later processing
 m4_define([VERSION_MAJOR],[1])
 m4_define([VERSION_MINOR],[5])
-m4_define([VERSION_MICRO],[0])
+m4_define([VERSION_MICRO],[1])
 AC_INIT(unbound, m4_defn([VERSION_MAJOR]).m4_defn([VERSION_MINOR]).m4_defn([VERSION_MICRO]), unbound-bugs@nlnetlabs.nl, unbound)
 AC_SUBST(UNBOUND_VERSION_MAJOR, [VERSION_MAJOR])
 AC_SUBST(UNBOUND_VERSION_MINOR, [VERSION_MINOR])
@@ -57,6 +57,7 @@ LIBUNBOUND_AGE=3
 # 1.4.21 had 4:1:2
 # 1.4.22 had 4:1:2
 # 1.5.0 had 5:3:3 # adds ub_ctx_add_ta_autr
+# 1.5.1 had 5:4:3
 
 #   Current  -- the number of the binary API that we're implementing
 #   Revision -- which iteration of the implementation of the binary
@@ -1022,39 +1023,6 @@ if test "$USE_NSS" = "no"; then
 				AC_SEARCH_LIBS([clock_gettime], [rt])
 			;;
 			esac
-			# generate libtool to test if linking main
-			# from a dynamic library works.
-			LT_OUTPUT
-			AC_MSG_CHECKING([if dynamic lib can refer to main])
-			cat >tmp.$$.def <<EOF
-myfunc
-EOF
-			cat >tmp.$$.c <<EOF
-int myfunc(void);
-extern int main(int, char *argv[]);
-int myfunc(void)
-{
-	return ((int)main) + 1;
-}
-EOF
-			mylibtool=./libtool
-			mylibdir=/usr/local/lib
-			myok=yes
-			$mylibtool --quiet --tag=CC --mode=compile $CC $CFLAGS -o tmp.$$.lo -c tmp.$$.c >/dev/null 2>&1
-			if test $? = 0; then myok=yes; else myok=no; fi
-			if test "$myok" = "yes"; then
-			$mylibtool --quiet --tag=CC --mode=link $CC $CFLAGS -version-info 1:0:0 -no-undefined -export-symbols tmp.$$.def -o libtmp$$.la tmp.$$.lo $LDFLAGS -rpath $mylibdir $LIBS >/dev/null 2>&1
-				if test $? = 0; then myok=yes; else myok=no; fi
-			fi
-			if test "$myok" = "yes"; then
-				AC_MSG_RESULT(yes)
-				AC_DEFINE(CAN_REFERENCE_MAIN, [1], [define if a library can reference the 'main' symbol])
-			else
-				AC_MSG_RESULT(no)
-			fi
-			$mylibtool --quiet --mode=clean rm -rf libtmp$$.la tmp.$$.lo
-			rm -f tmp.$$.def tmp.$$.c libtmp$$.la tmp.$$.lo tmp.$$.o
-
 		    fi
 		])
 	fi
diff --git a/contrib/README b/contrib/README
index efbffbd0c565..49dee02e514b 100644
--- a/contrib/README
+++ b/contrib/README
@@ -25,4 +25,8 @@ distribution but may be helpful.
 * unbound_cache.cmd: windows script to save and load the cache.
 * warmup.sh: shell script to warm up DNS cache by your own MRU domains.
 * warmup.cmd: windows script to warm up DNS cache by your own MRU domains.
+* aaaa-filter-iterator.patch: adds config option aaaa-filter: yes that
+  works like the BIND feature (removes AAAA records unless AAAA-only domain).
+  Useful for certain 'broken IPv6 default route' scenarios.
+  Patch from Stephane Lapie for ASAHI Net.
 
diff --git a/contrib/aaaa-filter-iterator.patch b/contrib/aaaa-filter-iterator.patch
new file mode 100644
index 000000000000..8e03d7c99acb
--- /dev/null
+++ b/contrib/aaaa-filter-iterator.patch
@@ -0,0 +1,394 @@
+--- unbound-1.4.17.orig/doc/unbound.conf.5.in
++++ unbound-1.4.17/doc/unbound.conf.5.in
+@@ -519,6 +519,13 @@ authority servers and checks if the repl
+ Disabled by default. 
+ This feature is an experimental implementation of draft dns\-0x20.
+ .TP
++.B aaaa\-filter: \fI<yes or no>
++Activate behavior similar to BIND's AAAA-filter.
++This forces the dropping of all AAAA records, unless in the case of
++explicit AAAA queries, when no A records have been confirmed.
++This also causes an additional A query to be sent for each AAAA query.
++This breaks DNSSEC!
++.TP
+ .B private\-address: \fI<IP address or subnet>
+ Give IPv4 of IPv6 addresses or classless subnets. These are addresses
+ on your private network, and are not allowed to be returned for public
+--- unbound-1.4.17.orig/util/config_file.c
++++ unbound-1.4.17/util/config_file.c
+@@ -160,6 +160,7 @@ config_create(void)
+ 	cfg->harden_below_nxdomain = 0;
+ 	cfg->harden_referral_path = 0;
+ 	cfg->use_caps_bits_for_id = 0;
++	cfg->aaaa_filter = 0; /* ASN: default is disabled */
+ 	cfg->private_address = NULL;
+ 	cfg->private_domain = NULL;
+ 	cfg->unwanted_threshold = 0;
+--- unbound-1.4.17.orig/iterator/iter_scrub.c
++++ unbound-1.4.17/iterator/iter_scrub.c
+@@ -580,6 +580,32 @@ static int sanitize_nsec_is_overreach(st
+ }
+ 
+ /**
++ * ASN: Lookup A records from rrset cache.
++ * @param qinfo: the question originally asked.
++ * @param env: module environment with config and cache.
++ * @param ie: iterator environment with private address data.
++ * @return 0 if no A record found, 1 if A record found.
++ */
++static int
++asn_lookup_a_record_from_cache(struct query_info* qinfo,
++	struct module_env* env, struct iter_env* ie)
++{
++	struct ub_packed_rrset_key* akey;
++
++	/* get cached A records for queried name */
++	akey = rrset_cache_lookup(env->rrset_cache, qinfo->qname,
++		qinfo->qname_len, LDNS_RR_TYPE_A, qinfo->qclass,
++		0, *env->now, 0);
++	if(akey) { /* we had some. */
++		log_rrset_key(VERB_ALGO, "ASN-AAAA-filter: found A record",
++			      akey);
++		lock_rw_unlock(&akey->entry.lock);
++		return 1;
++	}
++	return 0;
++}
++
++/**
+  * Given a response event, remove suspect RRsets from the response.
+  * "Suspect" rrsets are potentially poison. Note that this routine expects
+  * the response to be in a "normalized" state -- that is, all "irrelevant"
+@@ -598,6 +625,7 @@ scrub_sanitize(ldns_buffer* pkt, struct
+ 	struct query_info* qinfo, uint8_t* zonename, struct module_env* env,
+ 	struct iter_env* ie)
+ {
++	int found_a_record = 0; /* ASN: do we have a A record? */
+ 	int del_addi = 0; /* if additional-holding rrsets are deleted, we
+ 		do not trust the normalized additional-A-AAAA any more */
+ 	struct rrset_parse* rrset, *prev;
+@@ -633,6 +661,13 @@ scrub_sanitize(ldns_buffer* pkt, struct
+ 		rrset = rrset->rrset_all_next;
+ 	}
+ 
++	/* ASN: Locate any A record we can find */
++	if((ie->aaaa_filter) && (qinfo->qtype == LDNS_RR_TYPE_AAAA)) {
++		found_a_record = asn_lookup_a_record_from_cache(qinfo,
++			env, ie);
++	}
++	/* ASN: End of added code */
++
+ 	/* At this point, we brutally remove ALL rrsets that aren't 
+ 	 * children of the originating zone. The idea here is that, 
+ 	 * as far as we know, the server that we contacted is ONLY 
+@@ -644,6 +679,24 @@ scrub_sanitize(ldns_buffer* pkt, struct
+ 	rrset = msg->rrset_first;
+ 	while(rrset) {
+ 
++		/* ASN: For AAAA records only... */
++		if((ie->aaaa_filter) && (rrset->type == LDNS_RR_TYPE_AAAA)) {
++			/* ASN: If this is not a AAAA query, then remove AAAA
++			 * records, no questions asked. If this IS a AAAA query
++			 * then remove AAAA records if we have an A record.
++			 * Otherwise, leave things be. */
++			if((qinfo->qtype != LDNS_RR_TYPE_AAAA) ||
++				(found_a_record)) {
++				remove_rrset("ASN-AAAA-filter: removing AAAA "
++					"for record", pkt, msg, prev, &rrset);
++				continue;
++			}
++			log_nametypeclass(VERB_ALGO, "ASN-AAAA-filter: "
++				"keep AAAA for", zonename,
++				LDNS_RR_TYPE_AAAA, qinfo->qclass);
++		}
++		/* ASN: End of added code */
++
+ 		/* remove private addresses */
+ 		if( (rrset->type == LDNS_RR_TYPE_A || 
+ 			rrset->type == LDNS_RR_TYPE_AAAA) &&
+--- unbound-1.4.17.orig/iterator/iterator.c
++++ unbound-1.4.17/iterator/iterator.c
+@@ -1579,6 +1579,53 @@ processDSNSFind(struct module_qstate* qs
+ 
+ 	return 0;
+ }
++
++/**
++ * ASN: This event state was added as an intermediary step between
++ * QUERYTARGETS_STATE and the next step, in order to cast a subquery for the
++ * purpose of caching A records for the queried name.
++ * 
++ * @param qstate: query state.
++ * @param iq: iterator query state.
++ * @param ie: iterator shared global environment.
++ * @param id: module id.
++ * @return true if the event requires more request processing immediately,
++ *         false if not. This state only returns true when it is generating
++ *         a SERVFAIL response because the query has hit a dead end.
++ */
++static int
++asn_processQueryAAAA(struct module_qstate* qstate, struct iter_qstate* iq,
++	struct iter_env* ie, int id)
++{
++	struct module_qstate* subq = NULL;
++
++	log_assert(iq->fetch_a_for_aaaa == 0);
++
++	/* flag the query properly in order to not loop */
++	iq->fetch_a_for_aaaa = 1;
++
++	/* re-throw same query, but with a different type */
++	if(!generate_sub_request(iq->qchase.qname,
++        	iq->qchase.qname_len, LDNS_RR_TYPE_A,
++		iq->qchase.qclass, qstate, id, iq,
++		INIT_REQUEST_STATE, FINISHED_STATE, &subq, 1)) {
++		log_nametypeclass(VERB_ALGO, "ASN-AAAA-filter: failed "
++			"preloading of A record for",
++			iq->qchase.qname, LDNS_RR_TYPE_A,
++			iq->qchase.qclass);
++		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
++	}
++	log_nametypeclass(VERB_ALGO, "ASN-AAAA-filter: "
++		"preloading records in cache for",
++		iq->qchase.qname, LDNS_RR_TYPE_A,
++		iq->qchase.qclass);
++
++	/* set this query as waiting */
++	qstate->ext_state[id] = module_wait_subquery;
++	/* at this point break loop */
++	return 0;
++}
++/* ASN: End of added code */
+ 	
+ /** 
+  * This is the request event state where the request will be sent to one of
+@@ -1626,6 +1673,13 @@ processQueryTargets(struct module_qstate
+ 		return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
+ 	}
+ 	
++	/* ASN: If we have a AAAA query, then also query for A records */
++	if((ie->aaaa_filter) && (iq->qchase.qtype == LDNS_RR_TYPE_AAAA) &&
++		(iq->fetch_a_for_aaaa == 0)) {
++		return next_state(iq, ASN_FETCH_A_FOR_AAAA_STATE);
++	}
++	/* ASN: End of added code */
++
+ 	/* Make sure we have a delegation point, otherwise priming failed
+ 	 * or another failure occurred */
+ 	if(!iq->dp) {
+@@ -2568,6 +2622,62 @@ processFinished(struct module_qstate* qs
+ 	return 0;
+ }
+ 
++/** 
++ * ASN: Do final processing on responses to A queries originated from AAAA
++ * queries. Events reach this state after the iterative resolution algorithm
++ * terminates.
++ * This is required down the road to decide whether to scrub AAAA records
++ * from the results or not.
++ *
++ * @param qstate: query state.
++ * @param id: module id.
++ * @param forq: super query state.
++ */
++static void
++asn_processAAAAResponse(struct module_qstate* qstate, int id,
++	struct module_qstate* super)
++{
++	struct iter_qstate* iq = (struct iter_qstate*)qstate->minfo[id];
++	struct iter_qstate* super_iq = (struct iter_qstate*)super->minfo[id];
++	struct ub_packed_rrset_key* rrset;
++	struct delegpt_ns* dpns = NULL;
++	int error = (qstate->return_rcode != LDNS_RCODE_NOERROR);
++
++	log_assert(super_iq->fetch_a_for_aaaa > 0);
++
++	/* let super go to evaluation of targets after this */
++	super_iq->state = QUERYTARGETS_STATE;
++
++	log_query_info(VERB_ALGO, "ASN-AAAA-filter: processAAAAResponse",
++		&qstate->qinfo);
++	log_query_info(VERB_ALGO, "ASN-AAAA-filter: processAAAAResponse super",
++		&super->qinfo);
++
++	if(super_iq->dp)
++		dpns = delegpt_find_ns(super_iq->dp,
++			qstate->qinfo.qname, qstate->qinfo.qname_len);
++	if (!dpns) {
++		/* not interested */
++		verbose(VERB_ALGO, "ASN-AAAA-filter: subq: %s, but parent not "
++			"interested%s", (error ? "error, but" : "success"),
++			(super_iq->dp ? "anymore" : " (was reset)"));
++		log_query_info(VERB_ALGO, "ASN-AAAA-filter: superq", &super->qinfo);
++		if(super_iq->dp && error)
++			delegpt_log(VERB_ALGO, super_iq->dp);
++		return;
++	} else if (error) {
++		verbose(VERB_ALGO, "ASN-AAAA-filter: mark as failed, "
++			"and go to target query.");
++		/* see if the failure did get (parent-lame) info */
++		if(!cache_fill_missing(super->env,
++			super_iq->qchase.qclass, super->region,
++			super_iq->dp))
++		log_err("ASN-AAAA-filter: out of memory adding missing");
++		dpns->resolved = 1; /* mark as failed */
++	}
++}
++/* ASN: End of added code */
++
+ /*
+  * Return priming query results to interestes super querystates.
+  * 
+@@ -2587,6 +2697,9 @@ iter_inform_super(struct module_qstate*
+ 	else if(super->qinfo.qtype == LDNS_RR_TYPE_DS && ((struct iter_qstate*)
+ 		super->minfo[id])->state == DSNS_FIND_STATE)
+ 		processDSNSResponse(qstate, id, super);
++	else if (super->qinfo.qtype == LDNS_RR_TYPE_AAAA && ((struct iter_qstate*)
++		super->minfo[id])->state == ASN_FETCH_A_FOR_AAAA_STATE)
++		asn_processAAAAResponse(qstate, id, super);
+ 	else if(qstate->return_rcode != LDNS_RCODE_NOERROR)
+ 		error_supers(qstate, id, super);
+ 	else if(qstate->is_priming)
+@@ -2624,6 +2737,9 @@ iter_handle(struct module_qstate* qstate
+ 			case INIT_REQUEST_3_STATE:
+ 				cont = processInitRequest3(qstate, iq, id);
+ 				break;
++			case ASN_FETCH_A_FOR_AAAA_STATE:
++				cont = asn_processQueryAAAA(qstate, iq, ie, id);
++				break;
+ 			case QUERYTARGETS_STATE:
+ 				cont = processQueryTargets(qstate, iq, ie, id);
+ 				break;
+@@ -2863,6 +2979,8 @@ iter_state_to_string(enum iter_state sta
+ 		return "INIT REQUEST STATE (stage 2)";
+ 	case INIT_REQUEST_3_STATE:
+ 		return "INIT REQUEST STATE (stage 3)";
++	case ASN_FETCH_A_FOR_AAAA_STATE:
++		return "ASN_FETCH_A_FOR_AAAA_STATE";
+ 	case QUERYTARGETS_STATE :
+ 		return "QUERY TARGETS STATE";
+ 	case PRIME_RESP_STATE :
+@@ -2887,6 +3005,7 @@ iter_state_is_responsestate(enum iter_st
+ 		case INIT_REQUEST_STATE :
+ 		case INIT_REQUEST_2_STATE :
+ 		case INIT_REQUEST_3_STATE :
++		case ASN_FETCH_A_FOR_AAAA_STATE :
+ 		case QUERYTARGETS_STATE :
+ 		case COLLECT_CLASS_STATE :
+ 			return 0;
+--- unbound-1.4.17.orig/iterator/iter_utils.c
++++ unbound-1.4.17/iterator/iter_utils.c
+@@ -128,6 +128,7 @@ iter_apply_cfg(struct iter_env* iter_env
+ 	}
+ 	iter_env->supports_ipv6 = cfg->do_ip6;
+ 	iter_env->supports_ipv4 = cfg->do_ip4;
++	iter_env->aaaa_filter = cfg->aaaa_filter;
+ 	return 1;
+ }
+ 
+--- unbound-1.4.17.orig/iterator/iterator.h
++++ unbound-1.4.17/iterator/iterator.h
+@@ -110,6 +110,9 @@ struct iter_env {
+ 	 * array of max_dependency_depth+1 size.
+ 	 */
+ 	int* target_fetch_policy;
++
++	/** ASN: AAAA-filter flag */
++	int aaaa_filter;
+ };
+ 
+ /**
+@@ -135,6 +138,14 @@ enum iter_state {
+ 	INIT_REQUEST_3_STATE,
+ 
+ 	/**
++	 * This state is responsible for intercepting AAAA queries,
++	 * and launch a A subquery on the same target, to populate the
++	 * cache with A records, so the AAAA filter scrubbing logic can
++	 * work.
++	 */
++	ASN_FETCH_A_FOR_AAAA_STATE,
++
++	/**
+ 	 * Each time a delegation point changes for a given query or a 
+ 	 * query times out and/or wakes up, this state is (re)visited. 
+ 	 * This state is reponsible for iterating through a list of 
+@@ -309,6 +320,13 @@ struct iter_qstate {
+ 	 */
+ 	int refetch_glue;
+ 
++	/**
++	 * ASN: This is a flag that, if true, means that this query is
++	 * for fetching A records to populate cache and determine if we must
++	 * return AAAA records or not.
++	 */
++	int fetch_a_for_aaaa;
++
+ 	/** list of pending queries to authoritative servers. */
+ 	struct outbound_list outlist;
+ };
+--- unbound-1.4.17.orig/util/config_file.h
++++ unbound-1.4.17/util/config_file.h
+@@ -169,6 +169,8 @@ struct config_file {
+ 	int harden_referral_path;
+ 	/** use 0x20 bits in query as random ID bits */
+ 	int use_caps_bits_for_id;
++	/** ASN: enable AAAA filter? */
++	int aaaa_filter;
+ 	/** strip away these private addrs from answers, no DNS Rebinding */
+ 	struct config_strlist* private_address;
+ 	/** allow domain (and subdomains) to use private address space */
+--- unbound-1.4.17.orig/util/configlexer.lex
++++ unbound-1.4.17/util/configlexer.lex
+@@ -177,6 +177,7 @@ harden-below-nxdomain{COLON}	{ YDVAR(1,
+ harden-referral-path{COLON}	{ YDVAR(1, VAR_HARDEN_REFERRAL_PATH) }
+ use-caps-for-id{COLON}		{ YDVAR(1, VAR_USE_CAPS_FOR_ID) }
+ unwanted-reply-threshold{COLON}	{ YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) }
++aaaa-filter{COLON}		{ YDVAR(1, VAR_AAAA_FILTER) }
+ private-address{COLON}		{ YDVAR(1, VAR_PRIVATE_ADDRESS) }
+ private-domain{COLON}		{ YDVAR(1, VAR_PRIVATE_DOMAIN) }
+ prefetch-key{COLON}		{ YDVAR(1, VAR_PREFETCH_KEY) }
+--- unbound-1.4.17.orig/util/configparser.y
++++ unbound-1.4.17/util/configparser.y
+@@ -92,6 +92,7 @@ extern struct config_parser_state* cfg_p
+ %token VAR_STATISTICS_CUMULATIVE VAR_OUTGOING_PORT_PERMIT 
+ %token VAR_OUTGOING_PORT_AVOID VAR_DLV_ANCHOR_FILE VAR_DLV_ANCHOR
+ %token VAR_NEG_CACHE_SIZE VAR_HARDEN_REFERRAL_PATH VAR_PRIVATE_ADDRESS
++%token VAR_AAAA_FILTER
+ %token VAR_PRIVATE_DOMAIN VAR_REMOTE_CONTROL VAR_CONTROL_ENABLE
+ %token VAR_CONTROL_INTERFACE VAR_CONTROL_PORT VAR_SERVER_KEY_FILE
+ %token VAR_SERVER_CERT_FILE VAR_CONTROL_KEY_FILE VAR_CONTROL_CERT_FILE
+@@ -151,6 +152,7 @@ content_server: server_num_threads | ser
+ 	server_dlv_anchor_file | server_dlv_anchor | server_neg_cache_size |
+ 	server_harden_referral_path | server_private_address |
+ 	server_private_domain | server_extended_statistics | 
++	server_aaaa_filter |
+ 	server_local_data_ptr | server_jostle_timeout | 
+ 	server_unwanted_reply_threshold | server_log_time_ascii | 
+ 	server_domain_insecure | server_val_sig_skew_min | 
+@@ -802,6 +803,15 @@ server_use_caps_for_id: VAR_USE_CAPS_FOR
+ 		free($2);
+ 	}
+ 	;
++server_aaaa_filter: VAR_AAAA_FILTER STRING_ARG
++	{
++		OUTYY(("P(server_aaaa_filter:%s)\n", $2));
++		if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0)
++			yyerror("expected yes or no.");
++		else cfg_parser->cfg->aaaa_filter = (strcmp($2, "yes")==0);
++		free($2);
++	}
++	;
+ server_private_address: VAR_PRIVATE_ADDRESS STRING_ARG
+ 	{
+ 		OUTYY(("P(server_private_address:%s)\n", $2));
+--- unbound-1.4.17.orig/pythonmod/interface.i
++++ unbound-1.4.17/pythonmod/interface.i
+@@ -626,6 +626,7 @@ struct config_file {
+    int harden_dnssec_stripped;
+    int harden_referral_path;
+    int use_caps_bits_for_id;
++   int aaaa_filter; /* ASN */
+    struct config_strlist* private_address;
+    struct config_strlist* private_domain;
+    size_t unwanted_threshold;
diff --git a/daemon/cachedump.c b/daemon/cachedump.c
index cf5b1a12c9a7..20a46ae4dffb 100644
--- a/daemon/cachedump.c
+++ b/daemon/cachedump.c
@@ -664,7 +664,7 @@ load_msg(SSL* ssl, sldns_buffer* buf, struct worker* worker)
 	if(!go_on) 
 		return 1; /* skip this one, not all references satisfied */
 
-	if(!dns_cache_store(&worker->env, &qinf, &rep, 0, 0, 0, NULL)) {
+	if(!dns_cache_store(&worker->env, &qinf, &rep, 0, 0, 0, NULL, flags)) {
 		log_warn("error out of memory");
 		return 0;
 	}
diff --git a/daemon/remote.c b/daemon/remote.c
index 88ea063f21f8..ff3d769d4e54 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -854,7 +854,8 @@ print_ext(SSL* ssl, struct stats_info* s)
 
 	/* RCODE */
 	for(i=0; i<STATS_RCODE_NUM; i++) {
-		if(inhibit_zero && s->svr.ans_rcode[i] == 0)
+		/* Always include RCODEs 0-5 */
+		if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
 			continue;
 		lt = sldns_lookup_by_id(sldns_rcodes, i);
 		if(lt && lt->name) {
@@ -1094,8 +1095,13 @@ do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
 	k.qname_len = nmlen;
 	k.qtype = t;
 	k.qclass = c;
-	h = query_info_hash(&k);
+	h = query_info_hash(&k, 0);
 	slabhash_remove(worker->env.msg_cache, h, &k);
+	if(t == LDNS_RR_TYPE_AAAA) {
+		/* for AAAA also flush dns64 bit_cd packet */
+		h = query_info_hash(&k, BIT_CD);
+		slabhash_remove(worker->env.msg_cache, h, &k);
+	}
 }
 
 /** flush a type */
diff --git a/daemon/unbound.c b/daemon/unbound.c
index a53fe954db26..5ded5a964cc3 100644
--- a/daemon/unbound.c
+++ b/daemon/unbound.c
@@ -287,7 +287,7 @@ checkrlimits(struct config_file* cfg)
 #ifdef HAVE_SETRLIMIT
 		}
 #endif
-		log_warn("increased limit(open files) from %u to %u",
+		verbose(VERB_ALGO, "increased limit(open files) from %u to %u",
 			(unsigned)avail, (unsigned)total+10);
 	}
 #else	
diff --git a/daemon/worker.c b/daemon/worker.c
index f9067621385b..59ae9dfcefcb 100644
--- a/daemon/worker.c
+++ b/daemon/worker.c
@@ -935,7 +935,7 @@ worker_handle_request(struct comm_point* c, void* arg, int error,
 			&repinfo->addr, repinfo->addrlen);
 		goto send_reply;
 	}
-	h = query_info_hash(&qinfo);
+	h = query_info_hash(&qinfo, sldns_buffer_read_u16_at(c->buffer, 2));
 	if((e=slabhash_lookup(worker->env.msg_cache, h, &qinfo, 0))) {
 		/* answer from cache - we have acquired a readlock on it */
 		if(answer_from_cache(worker, &qinfo, 
diff --git a/dns64/dns64.c b/dns64/dns64.c
index 963e727fed76..eaaa26f7c910 100644
--- a/dns64/dns64.c
+++ b/dns64/dns64.c
@@ -399,7 +399,7 @@ handle_ipv6_ptr(struct module_qstate* qstate, int id)
 
     /* Create the new sub-query. */
     fptr_ok(fptr_whitelist_modenv_attach_sub(qstate->env->attach_sub));
-    if(!(*qstate->env->attach_sub)(qstate, &qinfo, qstate->query_flags, 0,
+    if(!(*qstate->env->attach_sub)(qstate, &qinfo, qstate->query_flags, 0, 0,
                 &subq))
         return module_error;
     if (subq) {
@@ -451,7 +451,7 @@ generate_type_A_query(struct module_qstate* qstate, int id)
 	/* Start the sub-query. */
 	fptr_ok(fptr_whitelist_modenv_attach_sub(qstate->env->attach_sub));
 	if(!(*qstate->env->attach_sub)(qstate, &qinfo, qstate->query_flags, 0,
-				       &subq))
+				       0, &subq))
 	{
 		verbose(VERB_ALGO, "dns64: sub-query creation failed");
 		return module_error;
@@ -520,11 +520,13 @@ handle_event_moddone(struct module_qstate* qstate, int id)
      *
      *   - An internal query.
      *   - A query for a record type other than AAAA.
+     *   - CD FLAG was set on querier
      *   - An AAAA query for which an error was returned.
      *   - A successful AAAA query with an answer.
      */
 	if ( (enum dns64_qstate)qstate->minfo[id] == DNS64_INTERNAL_QUERY
             || qstate->qinfo.qtype != LDNS_RR_TYPE_AAAA
+	    || (qstate->query_flags & BIT_CD)
 	    || qstate->return_rcode != LDNS_RCODE_NOERROR  
 	    || (qstate->return_msg &&
 		    qstate->return_msg->rep &&
@@ -813,7 +815,7 @@ dns64_inform_super(struct module_qstate* qstate, int id,
 
 	/* Store the generated response in cache. */
 	if (!dns_cache_store(super->env, &super->qinfo, super->return_msg->rep,
-	    0, 0, 0, NULL))
+	    0, 0, 0, NULL, super->query_flags))
 		log_err("out of memory");
 }
 
diff --git a/doc/Changelog b/doc/Changelog
index bd6f5456bb13..192b87c84129 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,9 +1,69 @@
+8 December 2014: Wouter
+	- Fix CVE-2014-8602: denial of service by making resolver chase
+	  endless series of delegations.
+
+1 December 2014: Wouter
+	- Fix bug#632: unbound fails to build on AArch64, protects
+	  getentropy compat code from calling sysctl if it is has been removed.
+
+29 November 2014: Wouter
+	- Add include to getentropy_linux.c, hopefully fixing debian build.
+
+28 November 2014: Wouter
+	- Fix makefile for build from noexec source tree.
+
+26 November 2014: Wouter
+	- Fix libunbound undefined symbol errors for main.
+	  Referencing main does not seem to be possible for libunbound.
+
+24 November 2014: Wouter
+	- Fix log at high verbosity and memory allocation failure.
+	- iana portlist update.
+
+21 November 2014: Wouter
+	- Fix crash on multiple thread random usage on systems without
+	  arc4random.
+
+20 November 2014: Wouter
+	- fix compat/getentropy_win.c check if CryptGenRandom works and no
+	  immediate exit on windows.
+
+19 November 2014: Wouter
+	- Fix cdflag dns64 processing.
+
+18 November 2014: Wouter
+	- Fix that CD flag disables DNS64 processing, returning the DNSSEC
+	  signed AAAA denial.
+	- iana portlist update.
+
+17 November 2014: Wouter
+	- Fix #627: SSL_CTX_load_verify_locations return code not properly
+	  checked.
+
+14 November 2014: Wouter
+	- parser with bison 2.7
+
+13 November 2014: Wouter
+	- Patch from Stephane Lapie for ASAHI Net that implements aaaa-filter,
+	added to contrib/aaaa-filter-iterator.patch.
+
+12 November 2014: Wouter
+	- trunk has 1.5.1 in development.
+	- Patch from Robert Edmonds to build pyunbound python module
+	  differently.  No versioninfo, with -shared and without $(LIBS).
+	- Patch from Robert Edmonds fixes hyphens in unbound-anchor man page.
+	- Removed 'increased limit open files' log message that is written
+	  to console.  It is only written on verbosity 4 and higher.
+	  This keeps system bootup console cleaner.
+	- Patch from James Raftery, always print stats for rcodes 0..5.
+
 11 November 2014: Wouter
 	- iana portlist update.
 	- Fix bug where forward or stub addresses with same address but
 	  different port number were not tried.
 	- version number in svn trunk is 1.5.0
 	- tag 1.5.0rc1
+	- review fix from Ralph.
 
 7 November 2014: Wouter
 	- dnstap fixes by Robert Edmonds:
diff --git a/doc/README b/doc/README
index d194aa0058af..df92fccb5d36 100644
--- a/doc/README
+++ b/doc/README
@@ -1,4 +1,4 @@
-README for Unbound 1.5.0
+README for Unbound 1.5.1
 Copyright 2007 NLnet Labs
 http://unbound.net
 
diff --git a/doc/example.conf.in b/doc/example.conf.in
index 294be92d51a8..b95b3a6339c4 100644
--- a/doc/example.conf.in
+++ b/doc/example.conf.in
@@ -1,7 +1,7 @@
 #
 # Example configuration file.
 #
-# See unbound.conf(5) man page, version 1.5.0.
+# See unbound.conf(5) man page, version 1.5.1.
 #
 # this is a comment.
 
diff --git a/doc/libunbound.3.in b/doc/libunbound.3.in
index 98abd28e2d41..55a9cb286e6e 100644
--- a/doc/libunbound.3.in
+++ b/doc/libunbound.3.in
@@ -1,4 +1,4 @@
-.TH "libunbound" "3" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "libunbound" "3" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" libunbound.3 -- unbound library functions manual
 .\"
@@ -42,7 +42,7 @@
 .B ub_ctx_zone_remove,
 .B ub_ctx_data_add,
 .B ub_ctx_data_remove
-\- Unbound DNS validating resolver 1.5.0 functions.
+\- Unbound DNS validating resolver 1.5.1 functions.
 .SH "SYNOPSIS"
 .B #include <unbound.h>
 .LP
diff --git a/doc/unbound-anchor.8.in b/doc/unbound-anchor.8.in
index 6036dd241f61..80a3438dcaac 100644
--- a/doc/unbound-anchor.8.in
+++ b/doc/unbound-anchor.8.in
@@ -1,4 +1,4 @@
-.TH "unbound-anchor" "8" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound-anchor" "8" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound-anchor.8 -- unbound anchor maintenance utility manual
 .\"
@@ -24,14 +24,14 @@ Suggested usage:
 .nf
 	# in the init scripts.
 	# provide or update the root anchor (if necessary)
-	unbound-anchor -a "@UNBOUND_ROOTKEY_FILE@"
+	unbound-anchor \-a "@UNBOUND_ROOTKEY_FILE@"
 	# Please note usage of this root anchor is at your own risk
 	# and under the terms of our LICENSE (see source).
 	#
 	# start validating resolver
 	# the unbound.conf contains:
 	#   auto-trust-anchor-file: "@UNBOUND_ROOTKEY_FILE@"
-	unbound -c unbound.conf
+	unbound \-c unbound.conf
 .fi
 .P
 This tool provides builtin default contents for the root anchor and root
@@ -138,7 +138,7 @@ tracking, or if an error occurred.
 .P
 You can check the exit value in this manner:
 .nf
-	unbound-anchor -a "root.key" || logger "Please check root.key"
+	unbound-anchor \-a "root.key" || logger "Please check root.key"
 .fi
 Or something more suitable for your operational environment.
 .SH "TRUST"
diff --git a/doc/unbound-checkconf.8.in b/doc/unbound-checkconf.8.in
index 6253729ccb25..5ab53480b6fe 100644
--- a/doc/unbound-checkconf.8.in
+++ b/doc/unbound-checkconf.8.in
@@ -1,4 +1,4 @@
-.TH "unbound-checkconf" "8" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound-checkconf" "8" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound-checkconf.8 -- unbound configuration checker manual
 .\"
diff --git a/doc/unbound-control.8.in b/doc/unbound-control.8.in
index bfe24c2ed1c9..92d2d1a9343d 100644
--- a/doc/unbound-control.8.in
+++ b/doc/unbound-control.8.in
@@ -1,4 +1,4 @@
-.TH "unbound-control" "8" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound-control" "8" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound-control.8 -- unbound remote control manual
 .\"
diff --git a/doc/unbound-host.1.in b/doc/unbound-host.1.in
index c2b047b3c0c9..d9e92bbe099a 100644
--- a/doc/unbound-host.1.in
+++ b/doc/unbound-host.1.in
@@ -1,4 +1,4 @@
-.TH "unbound\-host" "1" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound\-host" "1" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound-host.1 -- unbound DNS lookup utility
 .\"
diff --git a/doc/unbound.8.in b/doc/unbound.8.in
index 27e54d6e5153..3b74a3242ada 100644
--- a/doc/unbound.8.in
+++ b/doc/unbound.8.in
@@ -1,4 +1,4 @@
-.TH "unbound" "8" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound" "8" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound.8 -- unbound manual
 .\"
@@ -9,7 +9,7 @@
 .\"
 .SH "NAME"
 .B unbound
-\- Unbound DNS validating resolver 1.5.0.
+\- Unbound DNS validating resolver 1.5.1.
 .SH "SYNOPSIS"
 .B unbound
 .RB [ \-h ]
diff --git a/doc/unbound.conf.5.in b/doc/unbound.conf.5.in
index cd0af718fb94..f08a01b31844 100644
--- a/doc/unbound.conf.5.in
+++ b/doc/unbound.conf.5.in
@@ -1,4 +1,4 @@
-.TH "unbound.conf" "5" "Nov 18, 2014" "NLnet Labs" "unbound 1.5.0"
+.TH "unbound.conf" "5" "Dec  8, 2014" "NLnet Labs" "unbound 1.5.1"
 .\"
 .\" unbound.conf.5 -- unbound.conf manual
 .\"
diff --git a/iterator/iter_utils.c b/iterator/iter_utils.c
index 4148c1268f78..9d0aa698f996 100644
--- a/iterator/iter_utils.c
+++ b/iterator/iter_utils.c
@@ -425,10 +425,10 @@ dns_copy_msg(struct dns_msg* from, struct regional* region)
 void 
 iter_dns_store(struct module_env* env, struct query_info* msgqinf,
 	struct reply_info* msgrep, int is_referral, time_t leeway, int pside,
-	struct regional* region)
+	struct regional* region, uint16_t flags)
 {
 	if(!dns_cache_store(env, msgqinf, msgrep, is_referral, leeway,
-		pside, region))
+		pside, region, flags))
 		log_err("out of memory: cannot store data in cache");
 }
 
@@ -457,7 +457,8 @@ causes_cycle(struct module_qstate* qstate, uint8_t* name, size_t namelen,
 	fptr_ok(fptr_whitelist_modenv_detect_cycle(
 		qstate->env->detect_cycle));
 	return (*qstate->env->detect_cycle)(qstate, &qinf, 
-		(uint16_t)(BIT_RD|BIT_CD), qstate->is_priming);
+		(uint16_t)(BIT_RD|BIT_CD), qstate->is_priming,
+		qstate->is_valrec);
 }
 
 void 
diff --git a/iterator/iter_utils.h b/iterator/iter_utils.h
index abdc68f3cd44..d7c2b68afa2d 100644
--- a/iterator/iter_utils.h
+++ b/iterator/iter_utils.h
@@ -124,6 +124,7 @@ struct dns_msg* dns_copy_msg(struct dns_msg* from, struct regional* regional);
  * @param pside: true if dp is parentside, thus message is 'fresh' and NS
  * 	can be prefetch-updates.
  * @param region: to copy modified (cache is better) rrs back to.
+ * @param flags: with BIT_CD for dns64 AAAA translated queries.
  * @return void, because we are not interested in alloc errors,
  * 	the iterator and validator can operate on the results in their
  * 	scratch space (the qstate.region) and are not dependent on the cache.
@@ -132,7 +133,7 @@ struct dns_msg* dns_copy_msg(struct dns_msg* from, struct regional* regional);
  */
 void iter_dns_store(struct module_env* env, struct query_info* qinf,
 	struct reply_info* rep, int is_referral, time_t leeway, int pside,
-	struct regional* region);
+	struct regional* region, uint16_t flags);
 
 /**
  * Select randomly with n/m probability.
diff --git a/iterator/iterator.c b/iterator/iterator.c
index df5f645cc28c..6e05c99a0e95 100644
--- a/iterator/iterator.c
+++ b/iterator/iterator.c
@@ -120,6 +120,7 @@ iter_new(struct module_qstate* qstate, int id)
 	iq->query_restart_count = 0;
 	iq->referral_count = 0;
 	iq->sent_count = 0;
+	iq->target_count = NULL;
 	iq->wait_priming_stub = 0;
 	iq->refetch_glue = 0;
 	iq->dnssec_expected = 0;
@@ -257,7 +258,7 @@ error_response_cache(struct module_qstate* qstate, int id, int rcode)
 		verbose(VERB_ALGO, "error response for prefetch in cache");
 		/* attempt to adjust the cache entry prefetch */
 		if(dns_cache_prefetch_adjust(qstate->env, &qstate->qinfo,
-			NORR_TTL))
+			NORR_TTL, qstate->query_flags))
 			return error_response(qstate, id, rcode);
 		/* if that fails (not in cache), fall through to store err */
 	}
@@ -270,7 +271,8 @@ error_response_cache(struct module_qstate* qstate, int id, int rcode)
 	/* do not waste time trying to validate this servfail */
 	err.security = sec_status_indeterminate;
 	verbose(VERB_ALGO, "store error response in message cache");
-	iter_dns_store(qstate->env, &qstate->qinfo, &err, 0, 0, 0, NULL);
+	iter_dns_store(qstate->env, &qstate->qinfo, &err, 0, 0, 0, NULL,
+		qstate->query_flags);
 	return error_response(qstate, id, rcode);
 }
 
@@ -453,6 +455,26 @@ handle_cname_response(struct module_qstate* qstate, struct iter_qstate* iq,
 	return 1;
 }
 
+/** create target count structure for this query */
+static void
+target_count_create(struct iter_qstate* iq)
+{
+	if(!iq->target_count) {
+		iq->target_count = (int*)calloc(2, sizeof(int));
+		/* if calloc fails we simply do not track this number */
+		if(iq->target_count)
+			iq->target_count[0] = 1;
+	}
+}
+
+static void
+target_count_increase(struct iter_qstate* iq, int num)
+{
+	target_count_create(iq);
+	if(iq->target_count)
+		iq->target_count[1] += num;
+}
+
 /**
  * Generate a subrequest.
  * Generate a local request event. Local events are tied to this module, and
@@ -486,6 +508,7 @@ generate_sub_request(uint8_t* qname, size_t qnamelen, uint16_t qtype,
 	uint16_t qflags = 0; /* OPCODE QUERY, no flags */
 	struct query_info qinf;
 	int prime = (finalstate == PRIME_RESP_STATE)?1:0;
+	int valrec = 0;
 	qinf.qname = qname;
 	qinf.qname_len = qnamelen;
 	qinf.qtype = qtype;
@@ -499,12 +522,15 @@ generate_sub_request(uint8_t* qname, size_t qnamelen, uint16_t qtype,
 	 * the resolution chain, which might have a validator. We are 
 	 * uninterested in validating things not on the direct resolution 
 	 * path.  */
-	if(!v)
+	if(!v) {
 		qflags |= BIT_CD;
+		valrec = 1;
+	}
 	
 	/* attach subquery, lookup existing or make a new one */
 	fptr_ok(fptr_whitelist_modenv_attach_sub(qstate->env->attach_sub));
-	if(!(*qstate->env->attach_sub)(qstate, &qinf, qflags, prime, &subq)) {
+	if(!(*qstate->env->attach_sub)(qstate, &qinf, qflags, prime, valrec,
+		&subq)) {
 		return 0;
 	}
 	*subq_ret = subq;
@@ -524,6 +550,10 @@ generate_sub_request(uint8_t* qname, size_t qnamelen, uint16_t qtype,
 		subiq = (struct iter_qstate*)subq->minfo[id];
 		memset(subiq, 0, sizeof(*subiq));
 		subiq->num_target_queries = 0;
+		target_count_create(iq);
+		subiq->target_count = iq->target_count;
+		if(iq->target_count)
+			iq->target_count[0] ++; /* extra reference */
 		subiq->num_current_queries = 0;
 		subiq->depth = iq->depth+1;
 		outbound_list_init(&subiq->outlist);
@@ -938,7 +968,8 @@ processInitRequest(struct module_qstate* qstate, struct iter_qstate* iq,
 	} else {
 		msg = dns_cache_lookup(qstate->env, iq->qchase.qname, 
 			iq->qchase.qname_len, iq->qchase.qtype, 
-			iq->qchase.qclass, qstate->region, qstate->env->scratch);
+			iq->qchase.qclass, qstate->query_flags,
+			qstate->region, qstate->env->scratch);
 		if(!msg && qstate->env->neg_cache) {
 			/* lookup in negative cache; may result in 
 			 * NOERROR/NODATA or NXDOMAIN answers that need validation */
@@ -1350,6 +1381,12 @@ query_for_targets(struct module_qstate* qstate, struct iter_qstate* iq,
 
 	if(iq->depth == ie->max_dependency_depth)
 		return 0;
+	if(iq->depth > 0 && iq->target_count &&
+		iq->target_count[1] > MAX_TARGET_COUNT) {
+		verbose(VERB_QUERY, "request has exceeded the maximum "
+			"number of glue fetches %d", iq->target_count[1]);
+		return 0;
+	}
 
 	iter_mark_cycle_targets(qstate, iq->dp);
 	missing = (int)delegpt_count_missing_targets(iq->dp);
@@ -1532,6 +1569,7 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 			return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 		}
 		iq->num_target_queries += qs;
+		target_count_increase(iq, qs);
 		if(qs != 0) {
 			qstate->ext_state[id] = module_wait_subquery;
 			return 0; /* and wait for them */
@@ -1541,6 +1579,12 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 		verbose(VERB_QUERY, "maxdepth and need more nameservers, fail");
 		return error_response_cache(qstate, id, LDNS_RCODE_SERVFAIL);
 	}
+	if(iq->depth > 0 && iq->target_count &&
+		iq->target_count[1] > MAX_TARGET_COUNT) {
+		verbose(VERB_QUERY, "request has exceeded the maximum "
+			"number of glue fetches %d", iq->target_count[1]);
+		return error_response_cache(qstate, id, LDNS_RCODE_SERVFAIL);
+	}
 	/* mark cycle targets for parent-side lookups */
 	iter_mark_pside_cycle_targets(qstate, iq->dp);
 	/* see if we can issue queries to get nameserver addresses */
@@ -1570,6 +1614,7 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
 		if(query_count != 0) { /* suspend to await results */
 			verbose(VERB_ALGO, "try parent-side glue lookup");
 			iq->num_target_queries += query_count;
+			target_count_increase(iq, query_count);
 			qstate->ext_state[id] = module_wait_subquery;
 			return 0;
 		}
@@ -1725,6 +1770,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 			return error_response(qstate, id, LDNS_RCODE_SERVFAIL);
 		}
 		iq->num_target_queries += extra;
+		target_count_increase(iq, extra);
 		if(iq->num_target_queries > 0) {
 			/* wait to get all targets, we want to try em */
 			verbose(VERB_ALGO, "wait for all targets for fallback");
@@ -1765,6 +1811,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 		/* errors ignored, these targets are not strictly necessary for
 		 * this result, we do not have to reply with SERVFAIL */
 		iq->num_target_queries += extra;
+		target_count_increase(iq, extra);
 	}
 
 	/* Add the current set of unused targets to our queue. */
@@ -1810,6 +1857,7 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
 					return 1;
 				}
 				iq->num_target_queries += qs;
+				target_count_increase(iq, qs);
 			}
 			/* Since a target query might have been made, we 
 			 * need to check again. */
@@ -1991,7 +2039,7 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
 		iter_dns_store(qstate->env, &iq->response->qinfo,
 			iq->response->rep, 0, qstate->prefetch_leeway,
 			iq->dp&&iq->dp->has_parent_side_NS,
-			qstate->region);
+			qstate->region, qstate->query_flags);
 		/* close down outstanding requests to be discarded */
 		outbound_list_clear(&iq->outlist);
 		iq->num_current_queries = 0;
@@ -2029,7 +2077,7 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
 			/* Store the referral under the current query */
 			/* no prefetch-leeway, since its not the answer */
 			iter_dns_store(qstate->env, &iq->response->qinfo,
-				iq->response->rep, 1, 0, 0, NULL);
+				iq->response->rep, 1, 0, 0, NULL, 0);
 			if(iq->store_parent_NS)
 				iter_store_parentside_NS(qstate->env, 
 					iq->response->rep);
@@ -2128,7 +2176,8 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
 		/* prefetchleeway applied because this updates answer parts */
 		iter_dns_store(qstate->env, &iq->response->qinfo,
 			iq->response->rep, 1, qstate->prefetch_leeway,
-			iq->dp&&iq->dp->has_parent_side_NS, NULL);
+			iq->dp&&iq->dp->has_parent_side_NS, NULL,
+			qstate->query_flags);
 		/* set the current request's qname to the new value. */
 		iq->qchase.qname = sname;
 		iq->qchase.qname_len = snamelen;
@@ -2209,7 +2258,7 @@ processQueryResponse(struct module_qstate* qstate, struct iter_qstate* iq,
 }
 
 /**
- * Return priming query results to interestes super querystates.
+ * Return priming query results to interested super querystates.
  * 
  * Sets the delegation point and delegation message (not nonRD queries).
  * This is a callback from walk_supers.
@@ -2640,7 +2689,7 @@ processFinished(struct module_qstate* qstate, struct iter_qstate* iq,
 			iter_dns_store(qstate->env, &qstate->qinfo, 
 				iq->response->rep, 0, qstate->prefetch_leeway,
 				iq->dp&&iq->dp->has_parent_side_NS,
-				qstate->region);
+				qstate->region, qstate->query_flags);
 		}
 	}
 	qstate->return_rcode = LDNS_RCODE_NOERROR;
@@ -2921,6 +2970,8 @@ iter_clear(struct module_qstate* qstate, int id)
 	iq = (struct iter_qstate*)qstate->minfo[id];
 	if(iq) {
 		outbound_list_clear(&iq->outlist);
+		if(iq->target_count && --iq->target_count[0] == 0)
+			free(iq->target_count);
 		iq->num_current_queries = 0;
 	}
 	qstate->minfo[id] = NULL;
diff --git a/iterator/iterator.h b/iterator/iterator.h
index 0b91760d4a49..1364b86d722b 100644
--- a/iterator/iterator.h
+++ b/iterator/iterator.h
@@ -52,6 +52,8 @@ struct iter_donotq;
 struct iter_prep_list;
 struct iter_priv;
 
+/** max number of targets spawned for a query and its subqueries */
+#define MAX_TARGET_COUNT	32
 /** max number of query restarts. Determines max number of CNAME chain. */
 #define MAX_RESTART_COUNT       8
 /** max number of referrals. Makes sure resolver does not run away */
@@ -251,6 +253,10 @@ struct iter_qstate {
 
 	/** number of queries fired off */
 	int sent_count;
+	
+	/** number of target queries spawned in [1], for this query and its
+	 * subqueries, the malloced-array is shared, [0] refcount. */
+	int* target_count;
 
 	/**
 	 * The query must store NS records from referrals as parentside RRs
diff --git a/libunbound/unbound.h b/libunbound/unbound.h
index 567f48271e3e..fe903d0c51d4 100644
--- a/libunbound/unbound.h
+++ b/libunbound/unbound.h
@@ -357,7 +357,7 @@ int ub_ctx_add_ta(struct ub_ctx* ctx, const char* ta);
 int ub_ctx_add_ta_file(struct ub_ctx* ctx, const char* fname);
 
 /**
- * Add trust anchor to the give context that is tracked with RFC5011
+ * Add trust anchor to the given context that is tracked with RFC5011
  * automated trust anchor maintenance.  The file is written to when the
  * trust anchor is changed.
  * Pass the name of a file that was output from eg. unbound-anchor,
diff --git a/pythonmod/pythonmod_utils.c b/pythonmod/pythonmod_utils.c
index 2f3848008e27..1091dcf10727 100644
--- a/pythonmod/pythonmod_utils.c
+++ b/pythonmod/pythonmod_utils.c
@@ -67,7 +67,7 @@ int storeQueryInCache(struct module_qstate* qstate, struct query_info* qinfo, st
     }
 
     return dns_cache_store(qstate->env, qinfo, msgrep, is_referral, 
-	qstate->prefetch_leeway, 0, NULL);
+	qstate->prefetch_leeway, 0, NULL, qstate->query_flags);
 }
 
 /*  Invalidate the message associated with query_info stored in message cache */
@@ -78,7 +78,7 @@ void invalidateQueryInCache(struct module_qstate* qstate, struct query_info* qin
     struct reply_info *r;
     size_t i, j;
 
-    h = query_info_hash(qinfo);
+    h = query_info_hash(qinfo, qstate->query_flags);
     if ((e=slabhash_lookup(qstate->env->msg_cache, h, qinfo, 0))) 
     {
 	r = (struct reply_info*)(e->data);
diff --git a/services/cache/dns.c b/services/cache/dns.c
index c663b8e8b9a2..4692744a15dd 100644
--- a/services/cache/dns.c
+++ b/services/cache/dns.c
@@ -184,7 +184,7 @@ addr_to_additional(struct ub_packed_rrset_key* rrset, struct regional* region,
 /** lookup message in message cache */
 static struct msgreply_entry* 
 msg_cache_lookup(struct module_env* env, uint8_t* qname, size_t qnamelen, 
-	uint16_t qtype, uint16_t qclass, time_t now, int wr)
+	uint16_t qtype, uint16_t qclass, uint16_t flags, time_t now, int wr)
 {
 	struct lruhash_entry* e;
 	struct query_info k;
@@ -194,7 +194,7 @@ msg_cache_lookup(struct module_env* env, uint8_t* qname, size_t qnamelen,
 	k.qname_len = qnamelen;
 	k.qtype = qtype;
 	k.qclass = qclass;
-	h = query_info_hash(&k);
+	h = query_info_hash(&k, flags);
 	e = slabhash_lookup(env->msg_cache, h, &k, wr);
 
 	if(!e) return NULL;
@@ -226,8 +226,10 @@ find_add_addrs(struct module_env* env, uint16_t qclass,
 				addr_to_additional(akey, region, *msg, now);
 			lock_rw_unlock(&akey->entry.lock);
 		} else {
+			/* BIT_CD on false because delegpt lookup does
+			 * not use dns64 translation */
 			neg = msg_cache_lookup(env, ns->name, ns->namelen,
-				LDNS_RR_TYPE_A, qclass, now, 0);
+				LDNS_RR_TYPE_A, qclass, 0, now, 0);
 			if(neg) {
 				delegpt_add_neg_msg(dp, neg);
 				lock_rw_unlock(&neg->entry.lock);
@@ -244,8 +246,10 @@ find_add_addrs(struct module_env* env, uint16_t qclass,
 				addr_to_additional(akey, region, *msg, now);
 			lock_rw_unlock(&akey->entry.lock);
 		} else {
+			/* BIT_CD on false because delegpt lookup does
+			 * not use dns64 translation */
 			neg = msg_cache_lookup(env, ns->name, ns->namelen,
-				LDNS_RR_TYPE_AAAA, qclass, now, 0);
+				LDNS_RR_TYPE_AAAA, qclass, 0, now, 0);
 			if(neg) {
 				delegpt_add_neg_msg(dp, neg);
 				lock_rw_unlock(&neg->entry.lock);
@@ -276,8 +280,10 @@ cache_fill_missing(struct module_env* env, uint16_t qclass,
 				ns->name, LDNS_RR_TYPE_A, qclass);
 			lock_rw_unlock(&akey->entry.lock);
 		} else {
+			/* BIT_CD on false because delegpt lookup does
+			 * not use dns64 translation */
 			neg = msg_cache_lookup(env, ns->name, ns->namelen,
-				LDNS_RR_TYPE_A, qclass, now, 0);
+				LDNS_RR_TYPE_A, qclass, 0, now, 0);
 			if(neg) {
 				delegpt_add_neg_msg(dp, neg);
 				lock_rw_unlock(&neg->entry.lock);
@@ -294,8 +300,10 @@ cache_fill_missing(struct module_env* env, uint16_t qclass,
 				ns->name, LDNS_RR_TYPE_AAAA, qclass);
 			lock_rw_unlock(&akey->entry.lock);
 		} else {
+			/* BIT_CD on false because delegpt lookup does
+			 * not use dns64 translation */
 			neg = msg_cache_lookup(env, ns->name, ns->namelen,
-				LDNS_RR_TYPE_AAAA, qclass, now, 0);
+				LDNS_RR_TYPE_AAAA, qclass, 0, now, 0);
 			if(neg) {
 				delegpt_add_neg_msg(dp, neg);
 				lock_rw_unlock(&neg->entry.lock);
@@ -626,7 +634,7 @@ synth_dname_msg(struct ub_packed_rrset_key* rrset, struct regional* region,
 struct dns_msg* 
 dns_cache_lookup(struct module_env* env,
 	uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
-	struct regional* region, struct regional* scratch)
+	uint16_t flags, struct regional* region, struct regional* scratch)
 {
 	struct lruhash_entry* e;
 	struct query_info k;
@@ -639,7 +647,7 @@ dns_cache_lookup(struct module_env* env,
 	k.qname_len = qnamelen;
 	k.qtype = qtype;
 	k.qclass = qclass;
-	h = query_info_hash(&k);
+	h = query_info_hash(&k, flags);
 	e = slabhash_lookup(env->msg_cache, h, &k, 0);
 	if(e) {
 		struct msgreply_entry* key = (struct msgreply_entry*)e->key;
@@ -716,7 +724,7 @@ dns_cache_lookup(struct module_env* env,
 	if(env->cfg->harden_below_nxdomain)
 	    while(!dname_is_root(k.qname)) {
 		dname_remove_label(&k.qname, &k.qname_len);
-		h = query_info_hash(&k);
+		h = query_info_hash(&k, flags);
 		e = slabhash_lookup(env->msg_cache, h, &k, 0);
 		if(e) {
 			struct reply_info* data = (struct reply_info*)e->data;
@@ -741,7 +749,7 @@ dns_cache_lookup(struct module_env* env,
 int 
 dns_cache_store(struct module_env* env, struct query_info* msgqinf,
         struct reply_info* msgrep, int is_referral, time_t leeway, int pside,
-	struct regional* region)
+	struct regional* region, uint16_t flags)
 {
 	struct reply_info* rep = NULL;
 	/* alloc, malloc properly (not in region, like msg is) */
@@ -786,7 +794,7 @@ dns_cache_store(struct module_env* env, struct query_info* msgqinf,
 		 * Not AA from cache. Not CD in cache (depends on client bit). */
 		rep->flags |= (BIT_RA | BIT_QR);
 		rep->flags &= ~(BIT_AA | BIT_CD);
-		h = query_info_hash(&qinf);
+		h = query_info_hash(&qinf, flags);
 		dns_cache_store_msg(env, &qinf, h, rep, leeway, pside, msgrep,
 			region);
 		/* qname is used inside query_info_entrysetup, and set to 
@@ -798,11 +806,11 @@ dns_cache_store(struct module_env* env, struct query_info* msgqinf,
 
 int 
 dns_cache_prefetch_adjust(struct module_env* env, struct query_info* qinfo,
-        time_t adjust)
+        time_t adjust, uint16_t flags)
 {
 	struct msgreply_entry* msg;
 	msg = msg_cache_lookup(env, qinfo->qname, qinfo->qname_len,
-		qinfo->qtype, qinfo->qclass, *env->now, 1);
+		qinfo->qtype, qinfo->qclass, flags, *env->now, 1);
 	if(msg) {
 		struct reply_info* rep = (struct reply_info*)msg->entry.data;
 		if(rep) {
diff --git a/services/cache/dns.h b/services/cache/dns.h
index 05a3e6296543..69796c2eb204 100644
--- a/services/cache/dns.h
+++ b/services/cache/dns.h
@@ -79,11 +79,12 @@ struct dns_msg {
  * 	can be updated to full TTL even in prefetch situations.
  * @param region: region to allocate better entries from cache into.
  *   (used when is_referral is false).
+ * @param flags: flags with BIT_CD for AAAA queries in dns64 translation.
  * @return 0 on alloc error (out of memory).
  */
 int dns_cache_store(struct module_env* env, struct query_info* qinf,
         struct reply_info* rep, int is_referral, time_t leeway, int pside,
-	struct regional* region); 
+	struct regional* region, uint16_t flags); 
 
 /**
  * Store message in the cache. Stores in message cache and rrset cache.
@@ -132,6 +133,7 @@ struct delegpt* dns_cache_find_delegation(struct module_env* env,
  * @param qnamelen: length of qname.
  * @param qtype: query type.
  * @param qclass: query class.
+ * @param flags: flags with BIT_CD for AAAA queries in dns64 translation.
  * @param region: where to allocate result.
  * @param scratch: where to allocate temporary data.
  * @return new response message (alloced in region, rrsets do not have IDs).
@@ -140,7 +142,7 @@ struct delegpt* dns_cache_find_delegation(struct module_env* env,
  */
 struct dns_msg* dns_cache_lookup(struct module_env* env,
 	uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
-	struct regional* region, struct regional* scratch);
+	uint16_t flags, struct regional* region, struct regional* scratch);
 
 /** 
  * find and add A and AAAA records for missing nameservers in delegpt 
@@ -186,9 +188,10 @@ int dns_msg_authadd(struct dns_msg* msg, struct regional* region,
  * @param env: module environment with caches and time.
  * @param qinfo: query info for the query that needs adjustment.
  * @param adjust: time in seconds to add to the prefetch_leeway.
+ * @param flags: flags with BIT_CD for AAAA queries in dns64 translation.
  * @return false if not in cache. true if added.
  */
 int dns_cache_prefetch_adjust(struct module_env* env, struct query_info* qinfo,
-        time_t adjust);
+        time_t adjust, uint16_t flags);
 
 #endif /* SERVICES_CACHE_DNS_H */
diff --git a/services/mesh.c b/services/mesh.c
index bc711d9b3ed6..a69aced223e3 100644
--- a/services/mesh.c
+++ b/services/mesh.c
@@ -132,6 +132,11 @@ mesh_state_compare(const void* ap, const void* bp)
 	if(!a->s.is_priming && b->s.is_priming)
 		return 1;
 
+	if(a->s.is_valrec && !b->s.is_valrec)
+		return -1;
+	if(!a->s.is_valrec && b->s.is_valrec)
+		return 1;
+
 	if((a->s.query_flags&BIT_RD) && !(b->s.query_flags&BIT_RD))
 		return -1;
 	if(!(a->s.query_flags&BIT_RD) && (b->s.query_flags&BIT_RD))
@@ -277,11 +282,7 @@ void mesh_new_client(struct mesh_area* mesh, struct query_info* qinfo,
         uint16_t qflags, struct edns_data* edns, struct comm_reply* rep,
         uint16_t qid)
 {
-	/* do not use CD flag from user for mesh state, we want the CD-query
-	 * to receive validation anyway, to protect out cache contents and
-	 * avoid bad-data in this cache that a downstream validator cannot
-	 * remove from this cache */
-	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&BIT_RD, 0);
+	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 	int was_detached = 0;
 	int was_noreply = 0;
 	int added = 0;
@@ -311,7 +312,7 @@ void mesh_new_client(struct mesh_area* mesh, struct query_info* qinfo,
 #ifdef UNBOUND_DEBUG
 		struct rbnode_t* n;
 #endif
-		s = mesh_state_create(mesh->env, qinfo, qflags&BIT_RD, 0);
+		s = mesh_state_create(mesh->env, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 		if(!s) {
 			log_err("mesh_state_create: out of memory; SERVFAIL");
 			error_encode(rep->c->buffer, LDNS_RCODE_SERVFAIL,
@@ -375,7 +376,7 @@ mesh_new_callback(struct mesh_area* mesh, struct query_info* qinfo,
 	uint16_t qflags, struct edns_data* edns, sldns_buffer* buf, 
 	uint16_t qid, mesh_cb_func_t cb, void* cb_arg)
 {
-	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&BIT_RD, 0);
+	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 	int was_detached = 0;
 	int was_noreply = 0;
 	int added = 0;
@@ -386,7 +387,7 @@ mesh_new_callback(struct mesh_area* mesh, struct query_info* qinfo,
 #ifdef UNBOUND_DEBUG
 		struct rbnode_t* n;
 #endif
-		s = mesh_state_create(mesh->env, qinfo, qflags&BIT_RD, 0);
+		s = mesh_state_create(mesh->env, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 		if(!s) {
 			return 0;
 		}
@@ -428,7 +429,7 @@ mesh_new_callback(struct mesh_area* mesh, struct query_info* qinfo,
 void mesh_new_prefetch(struct mesh_area* mesh, struct query_info* qinfo,
         uint16_t qflags, time_t leeway)
 {
-	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&BIT_RD, 0);
+	struct mesh_state* s = mesh_area_find(mesh, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 #ifdef UNBOUND_DEBUG
 	struct rbnode_t* n;
 #endif
@@ -447,7 +448,7 @@ void mesh_new_prefetch(struct mesh_area* mesh, struct query_info* qinfo,
 		mesh->stats_dropped ++;
 		return;
 	}
-	s = mesh_state_create(mesh->env, qinfo, qflags&BIT_RD, 0);
+	s = mesh_state_create(mesh->env, qinfo, qflags&(BIT_RD|BIT_CD), 0, 0);
 	if(!s) {
 		log_err("prefetch mesh_state_create: out of memory");
 		return;
@@ -496,7 +497,7 @@ void mesh_report_reply(struct mesh_area* mesh, struct outbound_entry* e,
 
 struct mesh_state* 
 mesh_state_create(struct module_env* env, struct query_info* qinfo, 
-	uint16_t qflags, int prime)
+	uint16_t qflags, int prime, int valrec)
 {
 	struct regional* region = alloc_reg_obtain(env->alloc);
 	struct mesh_state* mstate;
@@ -533,6 +534,7 @@ mesh_state_create(struct module_env* env, struct query_info* qinfo,
 	/* remove all weird bits from qflags */
 	mstate->s.query_flags = (qflags & (BIT_RD|BIT_CD));
 	mstate->s.is_priming = prime;
+	mstate->s.is_valrec = valrec;
 	mstate->s.reply = NULL;
 	mstate->s.region = region;
 	mstate->s.curmod = 0;
@@ -679,11 +681,12 @@ void mesh_detach_subs(struct module_qstate* qstate)
 }
 
 int mesh_attach_sub(struct module_qstate* qstate, struct query_info* qinfo,
-        uint16_t qflags, int prime, struct module_qstate** newq)
+        uint16_t qflags, int prime, int valrec, struct module_qstate** newq)
 {
 	/* find it, if not, create it */
 	struct mesh_area* mesh = qstate->env->mesh;
-	struct mesh_state* sub = mesh_area_find(mesh, qinfo, qflags, prime);
+	struct mesh_state* sub = mesh_area_find(mesh, qinfo, qflags, prime,
+		valrec);
 	int was_detached;
 	if(mesh_detect_cycle_found(qstate, sub)) {
 		verbose(VERB_ALGO, "attach failed, cycle detected");
@@ -694,7 +697,8 @@ int mesh_attach_sub(struct module_qstate* qstate, struct query_info* qinfo,
 		struct rbnode_t* n;
 #endif
 		/* create a new one */
-		sub = mesh_state_create(qstate->env, qinfo, qflags, prime);
+		sub = mesh_state_create(qstate->env, qinfo, qflags, prime,
+			valrec);
 		if(!sub) {
 			log_err("mesh_attach_sub: out of memory");
 			return 0;
@@ -941,13 +945,14 @@ void mesh_walk_supers(struct mesh_area* mesh, struct mesh_state* mstate)
 }
 
 struct mesh_state* mesh_area_find(struct mesh_area* mesh,
-	struct query_info* qinfo, uint16_t qflags, int prime)
+	struct query_info* qinfo, uint16_t qflags, int prime, int valrec)
 {
 	struct mesh_state key;
 	struct mesh_state* result;
 
 	key.node.key = &key;
 	key.s.is_priming = prime;
+	key.s.is_valrec = valrec;
 	key.s.qinfo = *qinfo;
 	key.s.query_flags = qflags;
 	
@@ -1107,8 +1112,9 @@ mesh_log_list(struct mesh_area* mesh)
 	struct mesh_state* m;
 	int num = 0;
 	RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
-		snprintf(buf, sizeof(buf), "%d%s%s%s%s%s mod%d %s%s", 
+		snprintf(buf, sizeof(buf), "%d%s%s%s%s%s%s mod%d %s%s", 
 			num++, (m->s.is_priming)?"p":"",  /* prime */
+			(m->s.is_valrec)?"v":"",  /* prime */
 			(m->s.query_flags&BIT_RD)?"RD":"",
 			(m->s.query_flags&BIT_CD)?"CD":"",
 			(m->super_set.count==0)?"d":"", /* detached */
@@ -1178,10 +1184,11 @@ mesh_get_mem(struct mesh_area* mesh)
 
 int 
 mesh_detect_cycle(struct module_qstate* qstate, struct query_info* qinfo,
-	uint16_t flags, int prime)
+	uint16_t flags, int prime, int valrec)
 {
 	struct mesh_area* mesh = qstate->env->mesh;
-	struct mesh_state* dep_m = mesh_area_find(mesh, qinfo, flags, prime);
+	struct mesh_state* dep_m = mesh_area_find(mesh, qinfo, flags, prime,
+		valrec);
 	return mesh_detect_cycle_found(qstate, dep_m);
 }
 
diff --git a/services/mesh.h b/services/mesh.h
index fbfbbcb4a94b..086e39094e8f 100644
--- a/services/mesh.h
+++ b/services/mesh.h
@@ -353,12 +353,13 @@ void mesh_detach_subs(struct module_qstate* qstate);
  * @param qinfo: what to query for (copied).
  * @param qflags: what flags to use (RD / CD flag or not).
  * @param prime: if it is a (stub) priming query.
+ * @param valrec: if it is a validation recursion query (lookup of key, DS).
  * @param newq: If the new subquery needs initialisation, it is returned,
  * 	otherwise NULL is returned.
  * @return: false on error, true if success (and init may be needed).
  */
 int mesh_attach_sub(struct module_qstate* qstate, struct query_info* qinfo,
-	uint16_t qflags, int prime, struct module_qstate** newq);
+	uint16_t qflags, int prime, int valrec, struct module_qstate** newq);
 
 /**
  * Query state is done, send messages to reply entries.
@@ -406,10 +407,12 @@ void mesh_state_delete(struct module_qstate* qstate);
  * @param qinfo: query info that the mesh is for.
  * @param qflags: flags for query (RD / CD flag).
  * @param prime: if true, it is a priming query, set is_priming on mesh state.
+ * @param valrec: if true, it is a validation recursion query, and sets
+ * 	is_valrec on the mesh state.
  * @return: new mesh state or NULL on allocation error.
  */
 struct mesh_state* mesh_state_create(struct module_env* env, 
-	struct query_info* qinfo, uint16_t qflags, int prime);
+	struct query_info* qinfo, uint16_t qflags, int prime, int valrec);
 
 /**
  * Cleanup a mesh state and its query state. Does not do rbtree or 
@@ -432,10 +435,11 @@ void mesh_delete_all(struct mesh_area* mesh);
  * @param qinfo: what query
  * @param qflags: if RD / CD bit is set or not.
  * @param prime: if it is a priming query.
+ * @param valrec: if it is a validation-recursion query.
  * @return: mesh state or NULL if not found.
  */
 struct mesh_state* mesh_area_find(struct mesh_area* mesh, 
-	struct query_info* qinfo, uint16_t qflags, int prime);
+	struct query_info* qinfo, uint16_t qflags, int prime, int valrec);
 
 /**
  * Setup attachment super/sub relation between super and sub mesh state.
@@ -523,13 +527,14 @@ size_t mesh_get_mem(struct mesh_area* mesh);
  * @param qinfo: query info for dependency.
  * @param flags: query flags of dependency.
  * @param prime: if dependency is a priming query or not.
+ * @param valrec: if it is a validation recursion query (lookup of key, DS).
  * @return true if the name,type,class exists and the given qstate mesh exists
  * 	as a dependency of that name. Thus if qstate becomes dependent on
  * 	name,type,class then a cycle is created, this is return value 1.
  * 	Too large to search is value 2 (also true).
  */
 int mesh_detect_cycle(struct module_qstate* qstate, struct query_info* qinfo,
-	uint16_t flags, int prime);
+	uint16_t flags, int prime, int valrec);
 
 /** compare two mesh_states */
 int mesh_state_compare(const void* ap, const void* bp);
diff --git a/smallapp/unbound-host.c b/smallapp/unbound-host.c
index 8020ad8c8023..95973410924f 100644
--- a/smallapp/unbound-host.c
+++ b/smallapp/unbound-host.c
@@ -409,7 +409,7 @@ extern int optind;
 /** getopt global, in case header files fail to declare it. */
 extern char* optarg;
 
-/** Main routine for checkconf */
+/** Main routine for unbound-host */
 int main(int argc, char* argv[])
 {
 	int c;
diff --git a/util/data/msgreply.c b/util/data/msgreply.c
index 126e7bef45b7..68bcfd09ee39 100644
--- a/util/data/msgreply.c
+++ b/util/data/msgreply.c
@@ -576,10 +576,12 @@ reply_info_delete(void* d, void* ATTR_UNUSED(arg))
 }
 
 hashvalue_t 
-query_info_hash(struct query_info *q)
+query_info_hash(struct query_info *q, uint16_t flags)
 {
 	hashvalue_t h = 0xab;
 	h = hashlittle(&q->qtype, sizeof(q->qtype), h);
+	if(q->qtype == LDNS_RR_TYPE_AAAA && (flags&BIT_CD))
+		h++;
 	h = hashlittle(&q->qclass, sizeof(q->qclass), h);
 	h = dname_query_hash(q->qname, h);
 	return h;
@@ -771,15 +773,14 @@ log_dns_msg(const char* str, struct query_info* qinfo, struct reply_info* rep)
 		region, 65535, 1)) {
 		log_info("%s: log_dns_msg: out of memory", str);
 	} else {
-		char* str = sldns_wire2str_pkt(sldns_buffer_begin(buf),
+		char* s = sldns_wire2str_pkt(sldns_buffer_begin(buf),
 			sldns_buffer_limit(buf));
-		if(!str) {
+		if(!s) {
 			log_info("%s: log_dns_msg: ldns tostr failed", str);
 		} else {
-			log_info("%s %s", 
-				str, (char*)sldns_buffer_begin(buf));
+			log_info("%s %s", str, s);
 		}
-		free(str);
+		free(s);
 	}
 	sldns_buffer_free(buf);
 	regional_destroy(region);
diff --git a/util/data/msgreply.h b/util/data/msgreply.h
index ccbd0d748381..e8d6d762e01a 100644
--- a/util/data/msgreply.h
+++ b/util/data/msgreply.h
@@ -305,8 +305,9 @@ void query_entry_delete(void *q, void* arg);
 /** delete reply_info data structure */
 void reply_info_delete(void* d, void* arg);
 
-/** calculate hash value of query_info, lowercases the qname */
-hashvalue_t query_info_hash(struct query_info *q);
+/** calculate hash value of query_info, lowercases the qname,
+ * uses CD flag for AAAA qtype */
+hashvalue_t query_info_hash(struct query_info *q, uint16_t flags);
 
 /**
  * Setup query info entry
diff --git a/util/fptr_wlist.c b/util/fptr_wlist.c
index 3a5fc5f0611a..5a77432c775e 100644
--- a/util/fptr_wlist.c
+++ b/util/fptr_wlist.c
@@ -280,7 +280,7 @@ fptr_whitelist_modenv_detach_subs(void (*fptr)(
 int 
 fptr_whitelist_modenv_attach_sub(int (*fptr)(
         struct module_qstate* qstate, struct query_info* qinfo,
-        uint16_t qflags, int prime, struct module_qstate** newq))
+        uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
 {
 	if(fptr == &mesh_attach_sub) return 1;
 	return 0;
@@ -296,7 +296,7 @@ fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
 int 
 fptr_whitelist_modenv_detect_cycle(int (*fptr)(        
 	struct module_qstate* qstate, struct query_info* qinfo,         
-	uint16_t flags, int prime))
+	uint16_t flags, int prime, int valrec))
 {
 	if(fptr == &mesh_detect_cycle) return 1;
 	return 0;
diff --git a/util/fptr_wlist.h b/util/fptr_wlist.h
index 62692ba8b530..10de5d816772 100644
--- a/util/fptr_wlist.h
+++ b/util/fptr_wlist.h
@@ -233,7 +233,7 @@ int fptr_whitelist_modenv_detach_subs(void (*fptr)(
  */
 int fptr_whitelist_modenv_attach_sub(int (*fptr)(
 	struct module_qstate* qstate, struct query_info* qinfo, 
-	uint16_t qflags, int prime, struct module_qstate** newq));
+	uint16_t qflags, int prime, int valrec, struct module_qstate** newq));
 
 /**
  * Check function pointer whitelist for module_env kill_sub callback values.
@@ -251,7 +251,7 @@ int fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq));
  */
 int fptr_whitelist_modenv_detect_cycle(int (*fptr)(
 	struct module_qstate* qstate, struct query_info* qinfo, 
-	uint16_t flags, int prime));
+	uint16_t flags, int prime, int valrec));
 
 /**
  * Check function pointer whitelist for module init call values.
diff --git a/util/iana_ports.inc b/util/iana_ports.inc
index ff971293fe9e..d318477e56f4 100644
--- a/util/iana_ports.inc
+++ b/util/iana_ports.inc
@@ -2061,6 +2061,7 @@
 2423,
 2424,
 2425,
+2426,
 2427,
 2428,
 2429,
@@ -5353,9 +5354,11 @@
 35004,
 35355,
 36001,
+36411,
 36865,
 37475,
 37654,
+38002,
 38201,
 38202,
 38203,
diff --git a/util/module.h b/util/module.h
index f95ff6dc8372..b9dde36e2f3c 100644
--- a/util/module.h
+++ b/util/module.h
@@ -256,13 +256,14 @@ struct module_env {
 	 * @param qinfo: what to query for (copied).
 	 * @param qflags: what flags to use (RD, CD flag or not).
 	 * @param prime: if it is a (stub) priming query.
+	 * @param valrec: validation lookup recursion, does not need validation
 	 * @param newq: If the new subquery needs initialisation, it is 
 	 * 	returned, otherwise NULL is returned.
 	 * @return: false on error, true if success (and init may be needed).
 	 */ 
 	int (*attach_sub)(struct module_qstate* qstate, 
 		struct query_info* qinfo, uint16_t qflags, int prime, 
-		struct module_qstate** newq);
+		int valrec, struct module_qstate** newq);
 
 	/**
 	 * Kill newly attached sub. If attach_sub returns newq for 
@@ -280,13 +281,15 @@ struct module_env {
 	 * @param qinfo: query info for dependency. 
 	 * @param flags: query flags of dependency, RD/CD flags.
 	 * @param prime: if dependency is a priming query or not.
+	 * @param valrec: validation lookup recursion, does not need validation
 	 * @return true if the name,type,class exists and the given 
 	 * 	qstate mesh exists as a dependency of that name. Thus 
 	 * 	if qstate becomes dependent on name,type,class then a 
 	 * 	cycle is created.
 	 */
 	int (*detect_cycle)(struct module_qstate* qstate, 
-		struct query_info* qinfo, uint16_t flags, int prime);
+		struct query_info* qinfo, uint16_t flags, int prime,
+		int valrec);
 
 	/** region for temporary usage. May be cleared after operate() call. */
 	struct regional* scratch;
@@ -397,6 +400,9 @@ struct module_qstate {
 	uint16_t query_flags;
 	/** if this is a (stub or root) priming query (with hints) */
 	int is_priming;
+	/** if this is a validation recursion query that does not get
+	 * validation itself */
+	int is_valrec;
 
 	/** comm_reply contains server replies */
 	struct comm_reply* reply;
diff --git a/util/net_help.c b/util/net_help.c
index 49ce677f4aa0..8c2bac7372fc 100644
--- a/util/net_help.c
+++ b/util/net_help.c
@@ -699,7 +699,7 @@ void* connect_sslctx_create(char* key, char* pem, char* verifypem)
 		}
 	}
 	if(verifypem && verifypem[0]) {
-		if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL) != 1) {
+		if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL)) {
 			log_crypto_err("error in SSL_CTX verify");
 			SSL_CTX_free(ctx);
 			return NULL;
diff --git a/validator/validator.c b/validator/validator.c
index aefa26a27948..9d5d5c390254 100644
--- a/validator/validator.c
+++ b/validator/validator.c
@@ -283,12 +283,25 @@ needs_validation(struct module_qstate* qstate, int ret_rc,
 {
 	int rcode;
 
-	/* If the CD bit is on in the original request, then we don't bother to
-	 * validate anything.*/
+	/* If the CD bit is on in the original request, then you could think
+	 * that we don't bother to validate anything.
+	 * But this is signalled internally with the valrec flag.
+	 * User queries are validated with BIT_CD to make our cache clean
+	 * so that bogus messages get retried by the upstream also for
+	 * downstream validators that set BIT_CD.
+	 * For DNS64 bit_cd signals no dns64 processing, but we want to
+	 * provide validation there too */
+	/*
 	if(qstate->query_flags & BIT_CD) {
 		verbose(VERB_ALGO, "not validating response due to CD bit");
 		return 0;
 	}
+	*/
+	if(qstate->is_valrec) {
+		verbose(VERB_ALGO, "not validating response, is valrec"
+			"(validation recursion lookup)");
+		return 0;
+	}
 
 	if(ret_rc != LDNS_RCODE_NOERROR || !ret_msg)
 		rcode = ret_rc;
@@ -351,14 +364,20 @@ generate_request(struct module_qstate* qstate, int id, uint8_t* name,
 	struct val_qstate* vq = (struct val_qstate*)qstate->minfo[id];
 	struct module_qstate* newq;
 	struct query_info ask;
+	int valrec;
 	ask.qname = name;
 	ask.qname_len = namelen;
 	ask.qtype = qtype;
 	ask.qclass = qclass;
 	log_query_info(VERB_ALGO, "generate request", &ask);
 	fptr_ok(fptr_whitelist_modenv_attach_sub(qstate->env->attach_sub));
+	/* enable valrec flag to avoid recursion to the same validation
+	 * routine, this lookup is simply a lookup. DLVs need validation */
+	if(qtype == LDNS_RR_TYPE_DLV)
+		valrec = 0;
+	else valrec = 1;
 	if(!(*qstate->env->attach_sub)(qstate, &ask, 
-		(uint16_t)(BIT_RD|flags), 0, &newq)){
+		(uint16_t)(BIT_RD|flags), 0, valrec, &newq)){
 		log_err("Could not generate request: out of memory");
 		return 0;
 	}
@@ -2005,14 +2024,16 @@ processFinished(struct module_qstate* qstate, struct val_qstate* vq,
 		/* if secure, this will override cache anyway, no need
 		 * to check if from parentNS */
 		if(!dns_cache_store(qstate->env, &vq->orig_msg->qinfo, 
-			vq->orig_msg->rep, 0, qstate->prefetch_leeway, 0, NULL)) {
+			vq->orig_msg->rep, 0, qstate->prefetch_leeway, 0, NULL,
+			qstate->query_flags)) {
 			log_err("out of memory caching validator results");
 		}
 	} else {
 		/* for a referral, store the verified RRsets */
 		/* and this does not get prefetched, so no leeway */
 		if(!dns_cache_store(qstate->env, &vq->orig_msg->qinfo, 
-			vq->orig_msg->rep, 1, 0, 0, NULL)) {
+			vq->orig_msg->rep, 1, 0, 0, NULL,
+			qstate->query_flags)) {
 			log_err("out of memory caching validator results");
 		}
 	}

From 3ff5baf8cb6770d63f234c261e9af15848bb939c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Mon, 5 Jan 2015 14:55:52 +0000
Subject: [PATCH 3/3] Add support for using a local socket for the remote
 control connection by specifying uts path instead of (or in addition to) an
 IP address as an argument to the control-interface configuration variable.

Add support for unencrypted and unauthenticated control connections
through a new configuration variable, control-use-cert.  To avoid the
complexity of supporting both SSL socket and plain socket descriptors
in the same code, we just use an unencrypted SSL context and forego
authentication.  The downside is that we still have to perform DH kex
when establishing the connection.

This patch was derived (with significant modifications) from the
contrib/unbound_unixsock.diff patch originally submitted by Ilya
Bakulin of Genua mbH.
---
 config.h.in                  |   3 +
 configure.ac                 |   2 +-
 daemon/remote.c              | 118 +++++++++++++++++++++++++++++------
 daemon/remote.h              |   2 +
 daemon/unbound.c             |  39 ++++--------
 doc/unbound.conf.5.in        |  33 ++++++----
 services/listen_dnsport.c    |  54 ++++++++++++++++
 services/listen_dnsport.h    |   9 +++
 smallapp/unbound-checkconf.c |   2 +-
 smallapp/unbound-control.c   |  81 ++++++++++++++++--------
 util/config_file.c           |  16 +++++
 util/config_file.h           |   4 ++
 util/configlexer.lex         |   1 +
 util/configparser.y          |  13 +++-
 util/net_help.c              |   4 +-
 15 files changed, 292 insertions(+), 89 deletions(-)

diff --git a/config.h.in b/config.h.in
index 2b7770b5c23a..7a8a5dd58e9c 100644
--- a/config.h.in
+++ b/config.h.in
@@ -380,6 +380,9 @@
 /* Define to 1 if you have the <sys/uio.h> header file. */
 #undef HAVE_SYS_UIO_H
 
+/* Define to 1 if you have the <sys/un.h> header file. */
+#undef HAVE_SYS_UN_H
+
 /* Define to 1 if you have the <sys/wait.h> header file. */
 #undef HAVE_SYS_WAIT_H
 
diff --git a/configure.ac b/configure.ac
index 7e5da1a9f046..37e1bf6f4bca 100644
--- a/configure.ac
+++ b/configure.ac
@@ -266,7 +266,7 @@ AC_CHECK_TOOL(STRIP, strip)
 ACX_LIBTOOL_C_ONLY
 
 # Checks for header files.
-AC_CHECK_HEADERS([stdarg.h stdbool.h netinet/in.h sys/param.h sys/socket.h sys/uio.h sys/resource.h arpa/inet.h syslog.h netdb.h sys/wait.h pwd.h glob.h grp.h login_cap.h winsock2.h ws2tcpip.h endian.h],,, [AC_INCLUDES_DEFAULT])
+AC_CHECK_HEADERS([stdarg.h stdbool.h netinet/in.h sys/param.h sys/socket.h sys/un.h sys/uio.h sys/resource.h arpa/inet.h syslog.h netdb.h sys/wait.h pwd.h glob.h grp.h login_cap.h winsock2.h ws2tcpip.h endian.h],,, [AC_INCLUDES_DEFAULT])
 
 # check for types.  
 # Using own tests for int64* because autoconf builtin only give 32bit.
diff --git a/daemon/remote.c b/daemon/remote.c
index ff3d769d4e54..a1d2628a904a 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -46,6 +46,10 @@
 #ifdef HAVE_OPENSSL_ERR_H
 #include <openssl/err.h>
 #endif
+#ifndef HEADER_DH_H
+#include <openssl/dh.h>
+#endif
+
 #include <ctype.h>
 #include "daemon/remote.h"
 #include "daemon/worker.h"
@@ -82,6 +86,9 @@
 #ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>
 #endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
@@ -131,6 +138,39 @@ timeval_divide(struct timeval* avg, const struct timeval* sum, size_t d)
 #endif
 }
 
+/*
+ * The following function was generated using the openssl utility, using
+ * the command : "openssl dhparam -dsaparam -C 512"
+ */
+DH *get_dh512()
+{
+	static unsigned char dh512_p[]={
+		0xC9,0xD7,0x05,0xDA,0x5F,0xAB,0x14,0xE8,0x11,0x56,0x77,0x85,
+		0xB1,0x24,0x2C,0x95,0x60,0xEA,0xE2,0x10,0x6F,0x0F,0x84,0xEC,
+		0xF4,0x45,0xE8,0x90,0x7A,0xA7,0x03,0xFF,0x5B,0x88,0x53,0xDE,
+		0xC4,0xDE,0xBC,0x42,0x78,0x71,0x23,0x7E,0x24,0xA5,0x5E,0x4E,
+		0xEF,0x6F,0xFF,0x5F,0xAF,0xBE,0x8A,0x77,0x62,0xB4,0x65,0x82,
+		0x7E,0xC9,0xED,0x2F,
+	};
+	static unsigned char dh512_g[]={
+		0x8D,0x3A,0x52,0xBC,0x8A,0x71,0x94,0x33,0x2F,0xE1,0xE8,0x4C,
+		0x73,0x47,0x03,0x4E,0x7D,0x40,0xE5,0x84,0xA0,0xB5,0x6D,0x10,
+		0x6F,0x90,0x43,0x05,0x1A,0xF9,0x0B,0x6A,0xD1,0x2A,0x9C,0x25,
+		0x0A,0xB9,0xD1,0x14,0xDC,0x35,0x1C,0x48,0x7C,0xC6,0x0C,0x6D,
+		0x32,0x1D,0xD3,0xC8,0x10,0xA8,0x82,0x14,0xA2,0x1C,0xF4,0x53,
+		0x23,0x3B,0x1C,0xB9,
+	};
+	DH *dh;
+
+	if ((dh=DH_new()) == NULL) return(NULL);
+	dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
+	dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
+	if ((dh->p == NULL) || (dh->g == NULL))
+	{ DH_free(dh); return(NULL); }
+	dh->length = 160;
+	return(dh);
+}
+
 struct daemon_remote*
 daemon_remote_create(struct config_file* cfg)
 {
@@ -165,6 +205,24 @@ daemon_remote_create(struct config_file* cfg)
 		daemon_remote_delete(rc);
 		return NULL;
 	}
+
+	if (cfg->remote_control_use_cert == 0) {
+		/* No certificates are requested */
+		if(!SSL_CTX_set_cipher_list(rc->ctx, "aNULL")) {
+			log_crypto_err("Failed to set aNULL cipher list");
+			return NULL;
+		}
+
+		/* Since we have no certificates and hence no source of
+		 * DH params, let's generate and set them
+		 */
+		if(!SSL_CTX_set_tmp_dh(rc->ctx,get_dh512())) {
+			log_crypto_err("Wanted to set DH param, but failed");
+			return NULL;
+		}
+		return rc;
+	}
+	rc->use_cert = 1;
 	s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
 	s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
 	if(!s_cert || !s_key) {
@@ -244,7 +302,8 @@ void daemon_remote_delete(struct daemon_remote* rc)
  * @return false on failure.
  */
 static int
-add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err)
+add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err,
+	struct config_file* cfg)
 {
 	struct addrinfo hints;
 	struct addrinfo* res;
@@ -255,29 +314,46 @@ add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err)
 	snprintf(port, sizeof(port), "%d", nr);
 	port[sizeof(port)-1]=0;
 	memset(&hints, 0, sizeof(hints));
-	hints.ai_socktype = SOCK_STREAM;
-	hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
-	if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
-#ifdef USE_WINSOCK
-		if(!noproto_is_err && r == EAI_NONAME) {
-			/* tried to lookup the address as name */
-			return 1; /* return success, but do nothing */
+
+	if(ip[0] == '/') {
+		/* This looks like a local socket */
+		fd = create_local_accept_sock(ip, &noproto);
+		/*
+		 * Change socket ownership and permissions so users other
+		 * than root can access it provided they are in the same
+		 * group as the user we run as.
+		 */
+		if(fd != -1) {
+			if (cfg->username && cfg->username[0])
+				chown(ip, cfg->uid, cfg->gid);
+			chmod(ip, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
 		}
+	} else {
+		hints.ai_socktype = SOCK_STREAM;
+		hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+		if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
+#ifdef USE_WINSOCK
+			if(!noproto_is_err && r == EAI_NONAME) {
+				/* tried to lookup the address as name */
+				return 1; /* return success, but do nothing */
+			}
 #endif /* USE_WINSOCK */
-                log_err("control interface %s:%s getaddrinfo: %s %s",
-			ip?ip:"default", port, gai_strerror(r),
+			log_err("control interface %s:%s getaddrinfo: %s %s",
+				ip?ip:"default", port, gai_strerror(r),
 #ifdef EAI_SYSTEM
-			r==EAI_SYSTEM?(char*)strerror(errno):""
+				r==EAI_SYSTEM?(char*)strerror(errno):""
 #else
-			""
+				""
 #endif
 			);
-		return 0;
+			return 0;
+		}
+
+		/* open fd */
+		fd = create_tcp_accept_sock(res, 1, &noproto, 0);
+		freeaddrinfo(res);
 	}
 
-	/* open fd */
-	fd = create_tcp_accept_sock(res, 1, &noproto, 0);
-	freeaddrinfo(res);
 	if(fd == -1 && noproto) {
 		if(!noproto_is_err)
 			return 1; /* return success, but do nothing */
@@ -314,7 +390,7 @@ struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 	if(cfg->control_ifs) {
 		struct config_strlist* p;
 		for(p = cfg->control_ifs; p; p = p->next) {
-			if(!add_open(p->str, cfg->control_port, &l, 1)) {
+			if(!add_open(p->str, cfg->control_port, &l, 1, cfg)) {
 				listening_ports_free(l);
 				return NULL;
 			}
@@ -322,12 +398,12 @@ struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 	} else {
 		/* defaults */
 		if(cfg->do_ip6 &&
-			!add_open("::1", cfg->control_port, &l, 0)) {
+			!add_open("::1", cfg->control_port, &l, 0, cfg)) {
 			listening_ports_free(l);
 			return NULL;
 		}
 		if(cfg->do_ip4 &&
-			!add_open("127.0.0.1", cfg->control_port, &l, 1)) {
+			!add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) {
 			listening_ports_free(l);
 			return NULL;
 		}
@@ -2434,7 +2510,9 @@ int remote_control_callback(struct comm_point* c, void* arg, int err,
 	s->shake_state = rc_none;
 
 	/* once handshake has completed, check authentication */
-	if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
+	if (!rc->use_cert) {
+		verbose(VERB_ALGO, "unauthenticated remote control connection");
+	} else if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
 		X509* x = SSL_get_peer_certificate(s->ssl);
 		if(!x) {
 			verbose(VERB_DETAIL, "remote control connection "
diff --git a/daemon/remote.h b/daemon/remote.h
index cc670b70128f..b25bfb1af611 100644
--- a/daemon/remote.h
+++ b/daemon/remote.h
@@ -89,6 +89,8 @@ struct daemon_remote {
 	struct worker* worker;
 	/** commpoints for accepting remote control connections */
 	struct listen_list* accept_list;
+	/* if certificates are used */
+	int use_cert;
 	/** number of active commpoints that are handling remote control */
 	int active;
 	/** max active commpoints */
diff --git a/daemon/unbound.c b/daemon/unbound.c
index 5ded5a964cc3..e48a6b5ea951 100644
--- a/daemon/unbound.c
+++ b/daemon/unbound.c
@@ -441,20 +441,14 @@ static void
 perform_setup(struct daemon* daemon, struct config_file* cfg, int debug_mode,
 	const char** cfgfile)
 {
+	log_assert(cfg);
+
 #ifdef HAVE_GETPWNAM
 	struct passwd *pwd = NULL;
-	uid_t uid;
-	gid_t gid;
-	/* initialize, but not to 0 (root) */
-	memset(&uid, 112, sizeof(uid));
-	memset(&gid, 112, sizeof(gid));
-	log_assert(cfg);
 
 	if(cfg->username && cfg->username[0]) {
 		if((pwd = getpwnam(cfg->username)) == NULL)
 			fatal_exit("user '%s' does not exist.", cfg->username);
-		uid = pwd->pw_uid;
-		gid = pwd->pw_gid;
 		/* endpwent below, in case we need pwd for setusercontext */
 	}
 #endif
@@ -511,18 +505,11 @@ perform_setup(struct daemon* daemon, struct config_file* cfg, int debug_mode,
 #ifdef HAVE_KILL
 	if(cfg->pidfile && cfg->pidfile[0]) {
 		writepid(daemon->pidfile, getpid());
-		if(!(cfg->chrootdir && cfg->chrootdir[0]) || 
-			(cfg->chrootdir && cfg->chrootdir[0] && 
-			strncmp(daemon->pidfile, cfg->chrootdir, 
-			strlen(cfg->chrootdir))==0)) {
-			/* delete of pidfile could potentially work,
-			 * chown to get permissions */
-			if(cfg->username && cfg->username[0]) {
-			  if(chown(daemon->pidfile, uid, gid) == -1) {
+		if(cfg->username && cfg->username[0]) {
+			if(chown(daemon->pidfile, cfg->uid, cfg->gid) == -1) {
 				log_err("cannot chown %u.%u %s: %s",
-					(unsigned)uid, (unsigned)gid,
+					(unsigned)cfg->uid, (unsigned)cfg->gid,
 					daemon->pidfile, strerror(errno));
-			  }
 			}
 		}
 	}
@@ -537,7 +524,7 @@ perform_setup(struct daemon* daemon, struct config_file* cfg, int debug_mode,
 		/* setusercontext does initgroups, setuid, setgid, and
 		 * also resource limits from login config, but we
 		 * still call setresuid, setresgid to be sure to set all uid*/
-		if(setusercontext(NULL, pwd, uid, (unsigned)
+		if(setusercontext(NULL, pwd, cfg->uid, (unsigned)
 			LOGIN_SETALL & ~LOGIN_SETUSER & ~LOGIN_SETGROUP) != 0)
 			log_warn("unable to setusercontext %s: %s",
 				cfg->username, strerror(errno));
@@ -601,27 +588,27 @@ perform_setup(struct daemon* daemon, struct config_file* cfg, int debug_mode,
 #ifdef HAVE_GETPWNAM
 	if(cfg->username && cfg->username[0]) {
 #  ifdef HAVE_INITGROUPS
-		if(initgroups(cfg->username, gid) != 0)
+		if(initgroups(cfg->username, cfg->gid) != 0)
 			log_warn("unable to initgroups %s: %s",
 				cfg->username, strerror(errno));
 #  endif /* HAVE_INITGROUPS */
 		endpwent();
 
 #ifdef HAVE_SETRESGID
-		if(setresgid(gid,gid,gid) != 0)
+		if(setresgid(cfg->gid,cfg->gid,cfg->gid) != 0)
 #elif defined(HAVE_SETREGID) && !defined(DARWIN_BROKEN_SETREUID)
-		if(setregid(gid,gid) != 0)
+		if(setregid(cfg->gid,cfg->gid) != 0)
 #else /* use setgid */
-		if(setgid(gid) != 0)
+		if(setgid(cfg->gid) != 0)
 #endif /* HAVE_SETRESGID */
 			fatal_exit("unable to set group id of %s: %s", 
 				cfg->username, strerror(errno));
 #ifdef HAVE_SETRESUID
-		if(setresuid(uid,uid,uid) != 0)
+		if(setresuid(cfg->uid,cfg->uid,cfg->uid) != 0)
 #elif defined(HAVE_SETREUID) && !defined(DARWIN_BROKEN_SETREUID)
-		if(setreuid(uid,uid) != 0)
+		if(setreuid(cfg->uid,cfg->uid) != 0)
 #else /* use setuid */
-		if(setuid(uid) != 0)
+		if(setuid(cfg->uid) != 0)
 #endif /* HAVE_SETRESUID */
 			fatal_exit("unable to set user id of %s: %s", 
 				cfg->username, strerror(errno));
diff --git a/doc/unbound.conf.5.in b/doc/unbound.conf.5.in
index f08a01b31844..9b23fd64da1b 100644
--- a/doc/unbound.conf.5.in
+++ b/doc/unbound.conf.5.in
@@ -958,36 +958,47 @@ to setup SSLv3 / TLSv1 security for the connection.  The
 section for options.  To setup the correct self\-signed certificates use the
 \fIunbound\-control\-setup\fR(8) utility.
 .TP 5
-.B control\-enable:     \fI<yes or no>
+.B control\-enable: \fI<yes or no>
 The option is used to enable remote control, default is "no".
 If turned off, the server does not listen for control commands.
 .TP 5
-.B control\-interface: <ip address>
-Give IPv4 or IPv6 addresses to listen on for control commands.
+.B control\-interface: \fI<ip address or path>
+Give IPv4 or IPv6 addresses or local socket path to listen on for
+control commands.
 By default localhost (127.0.0.1 and ::1) is listened to.
 Use 0.0.0.0 and ::0 to listen to all interfaces.
+If you change this and permissions have been dropped, you must restart
+the server for the change to take effect.
 .TP 5
-.B control\-port: <port number>
-The port number to listen on for control commands, default is 8953.
-If you change this port number, and permissions have been dropped,
-a reload is not sufficient to open the port again, you must then restart.
+.B control\-port: \fI<port number>
+The port number to listen on for IPv4 or IPv6 control interfaces,
+default is 8953.
+If you change this and permissions have been dropped, you must restart
+the server for the change to take effect.
 .TP 5
-.B server\-key\-file: "<private key file>"
+.B control-use-cert: \fI<yes or no>
+Whether to require certificate authentication of control connections.
+The default is "yes".
+This should not be changed unless there are other mechanisms in place
+to prevent untrusted users from accessing the remote control
+interface.
+.TP 5
+.B server\-key\-file: \fI<private key file>
 Path to the server private key, by default unbound_server.key.
 This file is generated by the \fIunbound\-control\-setup\fR utility.
 This file is used by the unbound server, but not by \fIunbound\-control\fR.
 .TP 5
-.B server\-cert\-file: "<certificate file.pem>"
+.B server\-cert\-file: \fI<certificate file.pem>
 Path to the server self signed certificate, by default unbound_server.pem.
 This file is generated by the \fIunbound\-control\-setup\fR utility.
 This file is used by the unbound server, and also by \fIunbound\-control\fR.
 .TP 5
-.B control\-key\-file: "<private key file>"
+.B control\-key\-file: \fI<private key file>
 Path to the control client private key, by default unbound_control.key.
 This file is generated by the \fIunbound\-control\-setup\fR utility.
 This file is used by \fIunbound\-control\fR.
 .TP 5
-.B control\-cert\-file: "<certificate file.pem>"
+.B control\-cert\-file: \fI<certificate file.pem>
 Path to the control client certificate, by default unbound_control.pem.
 This certificate has to be signed with the server certificate.
 This file is generated by the \fIunbound\-control\-setup\fR utility.
diff --git a/services/listen_dnsport.c b/services/listen_dnsport.c
index b7ffb6d3fad3..69c68b2807ff 100644
--- a/services/listen_dnsport.c
+++ b/services/listen_dnsport.c
@@ -56,6 +56,10 @@
 #endif
 #include <fcntl.h>
 
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
 /** number of queued TCP connections for listen() */
 #define TCP_BACKLOG 256 
 
@@ -571,6 +575,56 @@ create_tcp_accept_sock(struct addrinfo *addr, int v6only, int* noproto,
 	return s;
 }
 
+int
+create_local_accept_sock(char *path, int* noproto)
+{
+#ifdef HAVE_SYS_UN_H
+	int s;
+	struct sockaddr_un sun;
+
+	sun.sun_len = sizeof(sun);
+	sun.sun_family = AF_LOCAL;
+	strlcpy(sun.sun_path, path, 104);
+
+	if ((s = socket(PF_LOCAL, SOCK_STREAM, 0)) == -1) {
+		log_err("Cannot create local socket %s (%s)",
+			path, strerror(errno));
+		return -1;
+	}
+
+	if (unlink(path) && errno != ENOENT) {
+		/* The socket already exists and cannot be removed */
+		log_err("Cannot remove old local socket %s (%s)",
+			path, strerror(errno));
+		return -1;
+	}
+
+	if (bind(s, (struct sockaddr *)&sun,
+		sizeof(struct sockaddr_un)) == -1) {
+		log_err("Cannot bind local socket %s (%s)",
+			path, strerror(errno));
+		return -1;
+	}
+
+	if (!fd_set_nonblock(s)) {
+		log_err("Cannot set non-blocking mode");
+		return -1;
+	}
+
+	if (listen(s, TCP_BACKLOG) == -1) {
+		log_err("can't listen: %s", strerror(errno));
+		return -1;
+	}
+
+	return s;
+#else
+	log_err("Local sockets are not supported");
+	*noproto = 1;
+	return -1;
+#endif
+}
+
+
 /**
  * Create socket from getaddrinfo results
  */
diff --git a/services/listen_dnsport.h b/services/listen_dnsport.h
index 075f6d281d5d..0513b5d6c01b 100644
--- a/services/listen_dnsport.h
+++ b/services/listen_dnsport.h
@@ -207,4 +207,13 @@ int create_udp_sock(int family, int socktype, struct sockaddr* addr,
 int create_tcp_accept_sock(struct addrinfo *addr, int v6only, int* noproto,
 	int* reuseport);
 
+/**
+ * Create and bind local listening socket
+ * @param path: path to the socket.
+ * @param noproto: on error, this is set true if cause is that local sockets
+ *	are not supported.
+ * @return: the socket. -1 on error.
+ */
+int create_local_accept_sock(char* path, int* noproto);
+
 #endif /* LISTEN_DNSPORT_H */
diff --git a/smallapp/unbound-checkconf.c b/smallapp/unbound-checkconf.c
index e83867f26844..7723c3357695 100644
--- a/smallapp/unbound-checkconf.c
+++ b/smallapp/unbound-checkconf.c
@@ -416,7 +416,7 @@ morechecks(struct config_file* cfg, const char* fname)
 		endpwent();
 	}
 #endif
-	if(cfg->remote_control_enable) {
+	if(cfg->remote_control_enable && cfg->remote_control_use_cert) {
 		check_chroot_string("server-key-file", &cfg->server_key_file,
 			cfg->chrootdir, cfg);
 		check_chroot_string("server-cert-file", &cfg->server_cert_file,
diff --git a/smallapp/unbound-control.c b/smallapp/unbound-control.c
index ff86184a8162..37e840bad799 100644
--- a/smallapp/unbound-control.c
+++ b/smallapp/unbound-control.c
@@ -59,6 +59,10 @@
 #include "util/locks.h"
 #include "util/net_help.h"
 
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+
 /** Give unbound-control usage, and exit (1). */
 static void
 usage()
@@ -139,29 +143,37 @@ setup_ctx(struct config_file* cfg)
 	char* s_cert, *c_key, *c_cert;
 	SSL_CTX* ctx;
 
-	s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
-	c_key = fname_after_chroot(cfg->control_key_file, cfg, 1);
-	c_cert = fname_after_chroot(cfg->control_cert_file, cfg, 1);
-	if(!s_cert || !c_key || !c_cert)
-		fatal_exit("out of memory");
+	if(cfg->remote_control_use_cert) {
+		s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
+		c_key = fname_after_chroot(cfg->control_key_file, cfg, 1);
+		c_cert = fname_after_chroot(cfg->control_cert_file, cfg, 1);
+		if(!s_cert || !c_key || !c_cert)
+			fatal_exit("out of memory");
+	}
         ctx = SSL_CTX_new(SSLv23_client_method());
 	if(!ctx)
 		ssl_err("could not allocate SSL_CTX pointer");
         if(!(SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2))
 		ssl_err("could not set SSL_OP_NO_SSLv2");
-        if(!(SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3))
-		ssl_err("could not set SSL_OP_NO_SSLv3");
-	if(!SSL_CTX_use_certificate_file(ctx,c_cert,SSL_FILETYPE_PEM) ||
-		!SSL_CTX_use_PrivateKey_file(ctx,c_key,SSL_FILETYPE_PEM)
-		|| !SSL_CTX_check_private_key(ctx))
-		ssl_err("Error setting up SSL_CTX client key and cert");
-	if (SSL_CTX_load_verify_locations(ctx, s_cert, NULL) != 1)
-		ssl_err("Error setting up SSL_CTX verify, server cert");
-	SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
+        if(cfg->remote_control_use_cert) {
+		if(!(SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3))
+			ssl_err("could not set SSL_OP_NO_SSLv3");
+		if(!SSL_CTX_use_certificate_file(ctx,c_cert,SSL_FILETYPE_PEM) ||
+		    !SSL_CTX_use_PrivateKey_file(ctx,c_key,SSL_FILETYPE_PEM)
+		    || !SSL_CTX_check_private_key(ctx))
+			ssl_err("Error setting up SSL_CTX client key and cert");
+		if (SSL_CTX_load_verify_locations(ctx, s_cert, NULL) != 1)
+			ssl_err("Error setting up SSL_CTX verify, server cert");
+		SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
 
-	free(s_cert);
-	free(c_key);
-	free(c_cert);
+		free(s_cert);
+		free(c_key);
+		free(c_cert);
+	} else {
+		/* Use ciphers that don't require authentication  */
+		if(!SSL_CTX_set_cipher_list(ctx, "aNULL"))
+			ssl_err("Error setting NULL cipher!");
+	}
 	return ctx;
 }
 
@@ -171,6 +183,7 @@ contact_server(const char* svr, struct config_file* cfg, int statuscmd)
 {
 	struct sockaddr_storage addr;
 	socklen_t addrlen;
+	int addrfamily = 0;
 	int fd;
 	/* use svr or the first config entry */
 	if(!svr) {
@@ -189,12 +202,23 @@ contact_server(const char* svr, struct config_file* cfg, int statuscmd)
 	if(strchr(svr, '@')) {
 		if(!extstrtoaddr(svr, &addr, &addrlen))
 			fatal_exit("could not parse IP@port: %s", svr);
+#ifdef HAVE_SYS_UN_H
+	} else if(svr[0] == '/') {
+		struct sockaddr_un* sun = (struct sockaddr_un *) &addr;
+		sun->sun_family = AF_LOCAL;
+		sun->sun_len = sizeof(sun);
+		strlcpy(sun->sun_path, svr, 104);
+		addrlen = sizeof(struct sockaddr_un);
+		addrfamily = AF_LOCAL;
+#endif
 	} else {
 		if(!ipstrtoaddr(svr, cfg->control_port, &addr, &addrlen))
 			fatal_exit("could not parse IP: %s", svr);
 	}
-	fd = socket(addr_is_ip6(&addr, addrlen)?AF_INET6:AF_INET, 
-		SOCK_STREAM, 0);
+
+	if(addrfamily == 0)
+		addrfamily = addr_is_ip6(&addr, addrlen)?AF_INET6:AF_INET;
+	fd = socket(addrfamily, SOCK_STREAM, 0);
 	if(fd == -1) {
 #ifndef USE_WINSOCK
 		fatal_exit("socket: %s", strerror(errno));
@@ -223,7 +247,7 @@ contact_server(const char* svr, struct config_file* cfg, int statuscmd)
 
 /** setup SSL on the connection */
 static SSL*
-setup_ssl(SSL_CTX* ctx, int fd)
+setup_ssl(SSL_CTX* ctx, int fd, struct config_file* cfg)
 {
 	SSL* ssl;
 	X509* x;
@@ -249,10 +273,13 @@ setup_ssl(SSL_CTX* ctx, int fd)
 	/* check authenticity of server */
 	if(SSL_get_verify_result(ssl) != X509_V_OK)
 		ssl_err("SSL verification failed");
-	x = SSL_get_peer_certificate(ssl);
-	if(!x)
-		ssl_err("Server presented no peer certificate");
-	X509_free(x);
+	if(cfg->remote_control_use_cert) {
+		x = SSL_get_peer_certificate(ssl);
+		if(!x)
+			ssl_err("Server presented no peer certificate");
+		X509_free(x);
+	}
+
 	return ssl;
 }
 
@@ -330,11 +357,11 @@ go(const char* cfgfile, char* svr, int quiet, int argc, char* argv[])
 	if(!cfg->remote_control_enable)
 		log_warn("control-enable is 'no' in the config file.");
 	ctx = setup_ctx(cfg);
-	
+
 	/* contact server */
 	fd = contact_server(svr, cfg, argc>0&&strcmp(argv[0],"status")==0);
-	ssl = setup_ssl(ctx, fd);
-	
+	ssl = setup_ssl(ctx, fd, cfg);
+
 	/* send command */
 	ret = go_cmd(ssl, quiet, argc, argv);
 
diff --git a/util/config_file.c b/util/config_file.c
index 35bc6452a0ce..bb39cf9bd7a2 100644
--- a/util/config_file.c
+++ b/util/config_file.c
@@ -60,6 +60,9 @@
 #ifdef HAVE_GLOB_H
 # include <glob.h>
 #endif
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
 
 /** global config during parsing */
 struct config_parser_state* cfg_parser = 0;
@@ -131,6 +134,8 @@ config_create(void)
 		goto error_exit;
 	init_outgoing_availports(cfg->outgoing_avail_ports, 65536);
 	if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit;
+	cfg->uid = (uid_t)-1;
+	cfg->gid = (gid_t)-1;
 #ifdef HAVE_CHROOT
 	if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit;
 #endif
@@ -799,6 +804,17 @@ config_read(struct config_file* cfg, const char* filename, const char* chroot)
 		errno=EINVAL;
 		return 0;
 	}
+
+#ifdef HAVE_GETPWNAM
+	/* translate username into uid and gid */
+	if(cfg->username && cfg->username[0]) {
+		struct passwd *pwd;
+		if((pwd = getpwnam(cfg->username)) == NULL)
+			log_err("user '%s' does not exist.", cfg->username);
+		cfg->uid = pwd->pw_uid;
+		cfg->gid = pwd->pw_gid;
+	}
+#endif
 	return 1;
 }
 
diff --git a/util/config_file.h b/util/config_file.h
index 49ffbdde4a56..fd35d7863ae1 100644
--- a/util/config_file.h
+++ b/util/config_file.h
@@ -192,6 +192,8 @@ struct config_file {
 	char* chrootdir;
 	/** username to change to, if not "". */
 	char* username;
+	uid_t uid;
+	gid_t gid;
 	/** working directory */
 	char* directory;
 	/** filename to log to. */
@@ -282,6 +284,8 @@ struct config_file {
 	struct config_strlist* control_ifs;
 	/** port number for the control port */
 	int control_port;
+	/** use certificates for remote control */
+	int remote_control_use_cert;
 	/** private key file for server */
 	char* server_key_file;
 	/** certificate file for server */
diff --git a/util/configlexer.lex b/util/configlexer.lex
index 7ee7b9bd9a92..eea1b858400c 100644
--- a/util/configlexer.lex
+++ b/util/configlexer.lex
@@ -315,6 +315,7 @@ remote-control{COLON}		{ YDVAR(0, VAR_REMOTE_CONTROL) }
 control-enable{COLON}		{ YDVAR(1, VAR_CONTROL_ENABLE) }
 control-interface{COLON}	{ YDVAR(1, VAR_CONTROL_INTERFACE) }
 control-port{COLON}		{ YDVAR(1, VAR_CONTROL_PORT) }
+control-use-cert{COLON}		{ YDVAR(1, VAR_CONTROL_USE_CERT) }
 server-key-file{COLON}		{ YDVAR(1, VAR_SERVER_KEY_FILE) }
 server-cert-file{COLON}		{ YDVAR(1, VAR_SERVER_CERT_FILE) }
 control-key-file{COLON}		{ YDVAR(1, VAR_CONTROL_KEY_FILE) }
diff --git a/util/configparser.y b/util/configparser.y
index 7a92d9ee7899..cbb5e16bd813 100644
--- a/util/configparser.y
+++ b/util/configparser.y
@@ -95,6 +95,7 @@ extern struct config_parser_state* cfg_parser;
 %token VAR_PRIVATE_DOMAIN VAR_REMOTE_CONTROL VAR_CONTROL_ENABLE
 %token VAR_CONTROL_INTERFACE VAR_CONTROL_PORT VAR_SERVER_KEY_FILE
 %token VAR_SERVER_CERT_FILE VAR_CONTROL_KEY_FILE VAR_CONTROL_CERT_FILE
+%token VAR_CONTROL_USE_CERT
 %token VAR_EXTENDED_STATISTICS VAR_LOCAL_DATA_PTR VAR_JOSTLE_TIMEOUT
 %token VAR_STUB_PRIME VAR_UNWANTED_REPLY_THRESHOLD VAR_LOG_TIME_ASCII
 %token VAR_DOMAIN_INSECURE VAR_PYTHON VAR_PYTHON_SCRIPT VAR_VAL_SIG_SKEW_MIN
@@ -1270,7 +1271,7 @@ contents_rc: contents_rc content_rc
 	| ;
 content_rc: rc_control_enable | rc_control_interface | rc_control_port |
 	rc_server_key_file | rc_server_cert_file | rc_control_key_file |
-	rc_control_cert_file
+	rc_control_cert_file | rc_control_use_cert
 	;
 rc_control_enable: VAR_CONTROL_ENABLE STRING_ARG
 	{
@@ -1298,6 +1299,16 @@ rc_control_interface: VAR_CONTROL_INTERFACE STRING_ARG
 			yyerror("out of memory");
 	}
 	;
+rc_control_use_cert: VAR_CONTROL_USE_CERT STRING_ARG
+	{
+		OUTYY(("P(control_use_cert:%s)\n", $2));
+		if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0)
+			yyerror("expected yes or no.");
+		else cfg_parser->cfg->remote_control_use_cert =
+			(strcmp($2, "yes")==0);
+		free($2);
+	}
+	;
 rc_server_key_file: VAR_SERVER_KEY_FILE STRING_ARG
 	{
 		OUTYY(("P(rc_server_key_file:%s)\n", $2));
diff --git a/util/net_help.c b/util/net_help.c
index 8c2bac7372fc..335ee7499e7d 100644
--- a/util/net_help.c
+++ b/util/net_help.c
@@ -156,7 +156,7 @@ log_addr(enum verbosity_value v, const char* str,
 		case AF_INET6: family="ip6";
 			sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
 			break;
-		case AF_UNIX: family="unix"; break;
+		case AF_LOCAL: family="local"; break;
 		default: break;
 	}
 	if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) {
@@ -313,7 +313,7 @@ void log_name_addr(enum verbosity_value v, const char* str, uint8_t* zone,
 		case AF_INET6: family="";
 			sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr;
 			break;
-		case AF_UNIX: family="unix_family "; break;
+		case AF_LOCAL: family="local "; break;
 		default: break;
 	}
 	if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) {