532 lines
12 KiB
Bash
532 lines
12 KiB
Bash
#! /bin/sh
|
|
#
|
|
# Copyright (c) 2000 The KAME Project
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
# Note that almost all of the user-configurable behavior is not in this
|
|
# file, but rather in /etc/defaults/rc.conf. Please check that file
|
|
# first before contemplating any changes here. If you do need to change
|
|
# this file for some reason, we would like to know about it.
|
|
|
|
hexdigit () {
|
|
if [ $1 -lt 10 ]; then
|
|
echo $1
|
|
else
|
|
case $1 in
|
|
10) echo a ;;
|
|
11) echo b ;;
|
|
12) echo c ;;
|
|
13) echo d ;;
|
|
14) echo e ;;
|
|
15) echo f ;;
|
|
esac
|
|
fi
|
|
}
|
|
|
|
hexprint () {
|
|
val=$1
|
|
str=''
|
|
|
|
dig=`hexdigit $((${val} & 15))`
|
|
str=${dig}${str}
|
|
val=$((${val} >> 4))
|
|
while [ ${val} -gt 0 ]; do
|
|
dig=`hexdigit $((${val} & 15))`
|
|
str=${dig}${str}
|
|
val=$((${val} >> 4))
|
|
done
|
|
|
|
echo ${str}
|
|
}
|
|
|
|
# IPv6 startup
|
|
|
|
network6_pass1() {
|
|
echo -n 'Doing IPv6 network setup:'
|
|
|
|
# Initialize IP filtering using ip6fw
|
|
#
|
|
if /sbin/ip6fw -q flush > /dev/null 2>&1; then
|
|
ipv6_firewall_in_kernel=1
|
|
else
|
|
ipv6_firewall_in_kernel=0
|
|
fi
|
|
|
|
case ${ipv6_firewall_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ "${ipv6_firewall_in_kernel}" -eq 0 ] && kldload ip6fw; then
|
|
ipv6_firewall_in_kernel=1
|
|
echo "Kernel IPv6 firewall module loaded."
|
|
elif [ "${ipv6_firewall_in_kernel}" -eq 0 ]; then
|
|
echo "Warning: IPv6 firewall kernel module failed to load."
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Load the filters if required
|
|
#
|
|
case ${ipv6_firewall_in_kernel} in
|
|
1)
|
|
if [ -z "${ipv6_firewall_script}" ]; then
|
|
ipv6_firewall_script=/etc/rc.firewall6
|
|
fi
|
|
|
|
case ${ipv6_firewall_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ -r "${ipv6_firewall_script}" ]; then
|
|
. "${ipv6_firewall_script}"
|
|
echo -n 'IPv6 Firewall rules loaded.'
|
|
elif [ "`ip6fw l 65535`" = "65535 deny ipv6 from any to any" ]; then
|
|
echo -n "Warning: kernel has IPv6 firewall functionality, "
|
|
echo "but IPv6 firewall rules are not enabled."
|
|
echo " All ipv6 services are disabled."
|
|
fi
|
|
|
|
case ${ipv6_firewall_logging} in
|
|
[Yy][Ee][Ss] | '')
|
|
echo 'IPv6 Firewall logging=YES'
|
|
sysctl -w net.inet6.ip6.fw.verbose=1 >/dev/null
|
|
;;
|
|
*)
|
|
;;
|
|
esac
|
|
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
|
|
case ${ipv6_network_interfaces} in
|
|
[Aa][Uu][Tt][Oo])
|
|
#
|
|
# list of interfaces, and prefix for interfaces
|
|
#
|
|
ipv6_network_interfaces="`ifconfig -l`"
|
|
;;
|
|
esac
|
|
|
|
# just to make sure
|
|
ifconfig lo0 up
|
|
|
|
# disallow "internal" addresses to appear on the wire
|
|
route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject
|
|
route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
# act as a router
|
|
sysctl -w net.inet6.ip6.forwarding=1
|
|
sysctl -w net.inet6.ip6.accept_rtadv=0
|
|
|
|
# wait for DAD
|
|
for i in $ipv6_network_interfaces; do
|
|
ifconfig $i up
|
|
done
|
|
sleep `sysctl -n net.inet6.ip6.dad_count`
|
|
sleep 1
|
|
;;
|
|
*)
|
|
# act as endhost - start with manual configuration
|
|
sysctl -w net.inet6.ip6.forwarding=0
|
|
sysctl -w net.inet6.ip6.accept_rtadv=0
|
|
;;
|
|
esac
|
|
|
|
# setting up interfaces
|
|
network6_interface_setup $ipv6_network_interfaces
|
|
|
|
# wait for DAD's completion (for global addrs)
|
|
sleep `sysctl -n net.inet6.ip6.dad_count`
|
|
sleep 1
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
# Filter out interfaces on which IPv6 addr init failed.
|
|
ipv6_working_interfaces=""
|
|
for i in ${ipv6_network_interfaces}; do
|
|
laddr=`network6_getladdr $i exclude_tentative`
|
|
case ${laddr} in
|
|
'')
|
|
;;
|
|
*)
|
|
ipv6_working_interfaces="$i \
|
|
${ipv6_working_interfaces}"
|
|
;;
|
|
esac
|
|
done
|
|
ipv6_network_interfaces=${ipv6_working_interfaces}
|
|
;;
|
|
esac
|
|
|
|
# 6to4 setup
|
|
network6_stf_setup
|
|
|
|
# install the "default interface" to kernel, which will be used
|
|
# as the default route when there's no router.
|
|
network6_default_interface_setup
|
|
|
|
# setup static routes
|
|
network6_static_routes_setup
|
|
|
|
# setup faith
|
|
network6_faith_setup
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
# ipv6_router
|
|
case ${ipv6_router_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ -x ${ipv6_router} ]; then
|
|
echo -n " ${ipv6_router}"
|
|
${ipv6_router} ${ipv6_router_flags}
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# rtadvd
|
|
# This should enabled with a great care.
|
|
# You may want to fine-tune /etc/rtadvd.conf.
|
|
#
|
|
# And if you wish your rtadvd to receive and process
|
|
# router renumbering messages, specify your Router Renumbering
|
|
# security policy by -R option.
|
|
#
|
|
# See `man 3 ipsec_set_policy` for IPsec policy specification
|
|
# details.
|
|
# (CAUTION: This enables your routers prefix renumbering
|
|
# from another machine, so if you enable this, do it with
|
|
# enough care.)
|
|
#
|
|
case ${rtadvd_enable} in
|
|
[Yy][Ee][Ss])
|
|
# default
|
|
case ${rtadvd_interfaces} in
|
|
'')
|
|
for i in ${ipv6_network_interfaces}; do
|
|
case $i in
|
|
lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*)
|
|
continue
|
|
;;
|
|
*)
|
|
rtadvd_interfaces="${rtadvd_interfaces} ${i}"
|
|
;;
|
|
esac
|
|
done
|
|
;;
|
|
esac
|
|
rtadvd ${rtadvd_interfaces}
|
|
#
|
|
# Enable Router Renumbering, unicast case
|
|
# (use correct src/dst addr)
|
|
# rtadvd -R "in ipsec ah/transport/fec0:0:0:1::1-fec0:0:0:10::1/require" \
|
|
# ${ipv6_network_interfaces}
|
|
# Enable Router Renumbering, multicast case
|
|
# (use correct src addr)
|
|
# rtadvd -R "in ipsec ah/transport/ff05::2-fec0:0:0:10::1/require" \
|
|
# ${ipv6_network_interfaces}
|
|
;;
|
|
esac
|
|
|
|
# mroute6d
|
|
case ${mroute6d_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ -x ${mroute6d_program} ]; then
|
|
echo -n " ${mroute6d_program}"
|
|
${mroute6d_program} ${mroute6d_flags}
|
|
fi
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
|
|
case ${ipv6_ipv4mapping} in
|
|
[Yy][Ee][Ss])
|
|
echo -n ' IPv4 mapped IPv6 address support=YES'
|
|
sysctl -w net.inet6.ip6.v6only=0 >/dev/null
|
|
;;
|
|
'' | *)
|
|
echo -n ' IPv4 mapped IPv6 address support=NO'
|
|
sysctl -w net.inet6.ip6.v6only=1 >/dev/null
|
|
;;
|
|
esac
|
|
|
|
echo '.'
|
|
|
|
# Let future generations know we made it.
|
|
#
|
|
network6_pass1_done=YES
|
|
}
|
|
|
|
network6_interface_setup() {
|
|
interfaces=$*
|
|
rtsol_interfaces=''
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
rtsol_available=no
|
|
;;
|
|
*)
|
|
rtsol_available=yes
|
|
;;
|
|
esac
|
|
for i in $interfaces; do
|
|
rtsol_interface=yes
|
|
eval prefix=\$ipv6_prefix_$i
|
|
if [ -n "${prefix}" ]; then
|
|
rtsol_available=no
|
|
rtsol_interface=no
|
|
laddr=`network6_getladdr $i`
|
|
hostid=`expr "${laddr}" : 'fe80::\(.*\)%\(.*\)'`
|
|
for j in ${prefix}; do
|
|
address=$j\:${hostid}
|
|
ifconfig $i inet6 ${address} prefixlen 64 alias
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
# subnet-router anycast address
|
|
# (rfc2373)
|
|
ifconfig $i inet6 $j:: prefixlen 64 \
|
|
alias anycast
|
|
;;
|
|
esac
|
|
done
|
|
fi
|
|
eval ipv6_ifconfig=\$ipv6_ifconfig_$i
|
|
if [ -n "${ipv6_ifconfig}" ]; then
|
|
rtsol_available=no
|
|
rtsol_interface=no
|
|
ifconfig $i inet6 ${ipv6_ifconfig} alias
|
|
fi
|
|
|
|
if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ]
|
|
then
|
|
case ${i} in
|
|
lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*)
|
|
;;
|
|
*)
|
|
rtsol_interfaces="${rtsol_interfaces} ${i}"
|
|
;;
|
|
esac
|
|
else
|
|
ifconfig $i inet6
|
|
fi
|
|
done
|
|
|
|
if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then
|
|
# Act as endhost - automatically configured.
|
|
# You can configure only single interface, as
|
|
# specification assumes that autoconfigured host has
|
|
# single interface only.
|
|
sysctl -w net.inet6.ip6.accept_rtadv=1
|
|
set ${rtsol_interfaces}
|
|
ifconfig $1 up
|
|
rtsol $1
|
|
fi
|
|
|
|
for i in $interfaces; do
|
|
alias=0
|
|
while : ; do
|
|
eval ipv6_ifconfig=\$ipv6_ifconfig_${i}_alias${alias}
|
|
if [ -z "${ipv6_ifconfig}" ]; then
|
|
break;
|
|
fi
|
|
ifconfig $i inet6 ${ipv6_ifconfig} alias
|
|
alias=$((${alias} + 1))
|
|
done
|
|
done
|
|
}
|
|
|
|
network6_stf_setup() {
|
|
case ${stf_interface_ipv4addr} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
# assign IPv6 addr and interface route for 6to4 interface
|
|
stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
|
|
OIFS="$IFS"
|
|
IFS=".$IFS"
|
|
set ${stf_interface_ipv4addr}
|
|
IFS="$OIFS"
|
|
hexfrag1=`hexprint $(($1*256 + $2))`
|
|
hexfrag2=`hexprint $(($3*256 + $4))`
|
|
ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
|
|
case ${stf_interface_ipv6_ifid} in
|
|
[Aa][Uu][Tt][Oo] | '')
|
|
for i in ${ipv6_network_interfaces}; do
|
|
laddr=`network6_getladdr ${i}`
|
|
case ${laddr} in
|
|
'')
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
done
|
|
stf_interface_ipv6_ifid=`expr "${laddr}" : \
|
|
'fe80::\(.*\)%\(.*\)'`
|
|
case ${stf_interface_ipv6_ifid} in
|
|
'')
|
|
stf_interface_ipv6_ifid=0:0:0:1
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
|
|
prefixlen ${stf_prefixlen}
|
|
# disallow packets to malicious 6to4 prefix
|
|
route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
|
|
route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
|
|
route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject
|
|
route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_static_routes_setup() {
|
|
# Set up any static routes.
|
|
case ${ipv6_defaultrouter} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
ipv6_static_routes="default ${ipv6_static_routes}"
|
|
ipv6_route_default="default ${ipv6_defaultrouter}"
|
|
;;
|
|
esac
|
|
case ${ipv6_static_routes} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
for i in ${ipv6_static_routes}; do
|
|
eval ipv6_route_args=\$ipv6_route_${i}
|
|
route add -inet6 ${ipv6_route_args}
|
|
done
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_faith_setup() {
|
|
case ${ipv6_faith_prefix} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
sysctl -w net.inet6.ip6.keepfaith=1
|
|
ifconfig faith0 up
|
|
for prefix in ${ipv6_faith_prefix}; do
|
|
prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
|
|
case ${prefixlen} in
|
|
'')
|
|
prefixlen=96
|
|
;;
|
|
*)
|
|
prefix=`expr "${prefix}" : \
|
|
"\(.*\)/${prefixlen}"`
|
|
;;
|
|
esac
|
|
route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
|
|
route change -inet6 ${prefix} -prefixlen ${prefixlen} \
|
|
-ifp faith0
|
|
done
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_default_interface_setup() {
|
|
# Choose IPv6 default interface if it is not clearly specified.
|
|
case ${ipv6_default_interface} in
|
|
'')
|
|
for i in ${ipv6_network_interfaces}; do
|
|
case $i in
|
|
lo0|faith[0-9]*)
|
|
continue
|
|
;;
|
|
esac
|
|
laddr=`network6_getladdr $i exclude_tentative`
|
|
case ${laddr} in
|
|
'')
|
|
;;
|
|
*)
|
|
ipv6_default_interface=$i
|
|
break
|
|
;;
|
|
esac
|
|
done
|
|
;;
|
|
esac
|
|
|
|
# Disallow unicast packets without outgoing scope identifiers,
|
|
# or route such packets to a "default" interface, if it is specified.
|
|
route add -inet6 fe80:: -prefixlen 10 ::1 -reject
|
|
case ${ipv6_default_interface} in
|
|
[Nn][Oo] | '')
|
|
route add -inet6 ff02:: -prefixlen 16 ::1 -reject
|
|
;;
|
|
*)
|
|
laddr=`network6_getladdr ${ipv6_default_interface}`
|
|
route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
|
|
-cloning
|
|
|
|
# Disable installing the default interface with the
|
|
# case net.inet6.ip6.forwarding=0 and
|
|
# net.inet6.ip6.accept_rtadv=0, due to avoid conflict
|
|
# between the default router list and the manual
|
|
# configured default route.
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
;;
|
|
*)
|
|
if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ]
|
|
then
|
|
ndp -I ${ipv6_default_interface}
|
|
fi
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_getladdr() {
|
|
ifconfig $1 2>/dev/null | while read proto addr rest; do
|
|
case ${proto} in
|
|
inet6)
|
|
case ${addr} in
|
|
fe80::*)
|
|
if [ -z "$2" ]; then
|
|
echo ${addr}
|
|
return
|
|
fi
|
|
case ${rest} in
|
|
*tentative*)
|
|
continue
|
|
;;
|
|
*)
|
|
echo ${addr}
|
|
return
|
|
esac
|
|
esac
|
|
esac
|
|
done
|
|
}
|