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bz 3431d451a5 Initial implementation of draft-ietf-6man-ipv6only-flag. 
This change defines the RA "6" (IPv6-Only) flag which routers
may advertise, kernel logic to check if all routers on a link
have the flag set and accordingly update a per-interface flag.

If all routers agree that it is an IPv6-only link, ether_output_frame(),
based on the interface flag, will filter out all ETHERTYPE_IP/ARP
frames, drop them, and return EAFNOSUPPORT to upper layers.

The change also updates ndp to show the "6" flag, ifconfig to
display the IPV6_ONLY nd6 flag if set, and rtadvd to allow
announcing the flag.

Further changes to tcpdump (contrib code) are availble and will
be upstreamed.

Tested the code (slightly earlier version) with 2 FreeBSD
IPv6 routers, a FreeBSD laptop on ethernet as well as wifi,
and with Win10 and OSX clients (which did not fall over with
the "6" flag set but not understood).

We may also want to (a) implement and RX filter, and (b) over
time enahnce user space to, say, stop dhclient from running
when the interface flag is set.  Also we might want to start
IPv6 before IPv4 in the future.

All the code is hidden under the EXPERIMENTAL option and not
compiled by default as the draft is a work-in-progress and
we cannot rely on the fact that IANA will assign the bits
as requested by the draft and hence they may change.

Dear 6man, you have running code.

Discussed with:	Bob Hinden, Brian E Carpenter
2018-10-30 20:08:48 +00:00
..
adjkerntz various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
bectl libbe(3)/bectl(8): Make consistent with beadm 2018-08-24 20:44:58 +00:00
bsdlabel Move disktab to sbin/bsdlabel/ 2018-09-18 20:52:24 +00:00
camcontrol NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
ccdconfig ccdconfig: Move VCS tags to be more consistent with our style. 2017-12-30 00:26:42 +00:00
clri Refactoring of reading and writing of the UFS/FFS superblock. 2018-01-26 00:58:32 +00:00
comcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
conscontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ddb Move ddb.conf to sbin/ddb/ and switch to CONFS. 2018-08-11 13:25:39 +00:00
decryptcore Make decryptcore(8) buildable. 2018-09-19 07:07:03 +00:00
devd We don't need shell protection for when we're expanding matches. 2018-09-22 15:32:53 +00:00
devfs Move all devfs related files to sbin/devfs/ 2018-08-22 15:55:23 +00:00
devmatch Add in a missing newline 2018-08-25 15:47:52 +00:00
dhclient Move dhclient.conf to sbin/dhclient/. 2018-09-18 00:11:45 +00:00
dmesg General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
dump Move dumpdates creation to CONFS= 2018-07-26 16:45:25 +00:00
dumpfs The goal of this change is to prevent accidental foot shooting by 2018-02-08 23:06:58 +00:00
dumpon dumpon.8: Significantly revamp page 2018-10-26 20:03:59 +00:00
etherswitchcfg Finish removing FDDI and tokenring media support. 2018-04-23 21:10:33 +00:00
fdisk Allow fdisk(8) to deal with sectors larger than 2048 2018-10-25 12:13:13 +00:00
ffsinfo spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
fsck various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
fsck_ffs Continuing efforts to provide hardening of FFS, this change adds a 2018-10-23 21:10:06 +00:00
fsck_msdosfs Detect and handle invalid number of FATs 2018-07-13 02:02:16 +00:00
fsdb When using the fsdb `blocks' command, replace the long and ugly list of 2018-04-08 07:06:12 +00:00
fsirand Refactoring of reading and writing of the UFS/FFS superblock. 2018-01-26 00:58:32 +00:00
gbde various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
geom Add the "-t" option to geom(8) utility, to display geoms hierarchy. 2018-09-14 15:29:45 +00:00
ggate various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
growfs Refactoring of reading and writing of the UFS/FFS superblock. 2018-01-26 00:58:32 +00:00
gvinum gvinum: revert WARNS change in Makefile 2018-06-17 01:39:22 +00:00
hastctl various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
hastd Revert 335888 ("Ensure va_list is declared by including stdarg.h.") 2018-07-03 15:48:34 +00:00
ifconfig Initial implementation of draft-ietf-6man-ipv6only-flag. 2018-10-30 20:08:48 +00:00
init Move the rc framework out of sbin/init into libexec/rc. 2018-10-17 16:49:11 +00:00
ipf rescue ipf: Remove hacks and link in libipf directly. 2017-11-10 07:52:58 +00:00
ipfw Use correct format specificator to print setdscp action. 2018-10-25 18:06:23 +00:00
iscontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kldconfig various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kldload various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
kldstat Allow three digits of module id without breaking table alignment. 2018-07-02 09:14:00 +00:00
kldunload various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
ldconfig Make ldconfig(8) atomic, by removing an unneccessary call to unlink(2) 2018-08-09 11:46:12 +00:00
md5 Allow bootstrapping md5 on Linux, MacOS and FreeBSD < 12 2018-08-23 18:19:01 +00:00
mdconfig various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mdmfs mdmfs(8): Check for other types of helper-program failure 2018-10-20 21:33:00 +00:00
mknod General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mksnap_ffs various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mount When getting mount information for all filesystems, mount uses the 2018-08-07 21:17:45 +00:00
mount_cd9660 Advise reader to also see mdconfig(8) in mount_cd9660(8). 2018-08-11 08:34:24 +00:00
mount_fusefs various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
mount_msdosfs mount_msdosfs: do not fail mounts requiring locale name conversion table 2018-10-27 16:41:34 +00:00
mount_nfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_nullfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_udf General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
mount_unionfs General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
nandfs various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
natd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
newfs Continuing efforts to provide hardening of FFS, this change adds a 2018-10-23 21:10:06 +00:00
newfs_msdos Added option to cluster-align the start of the root directory. 2018-06-15 06:03:40 +00:00
newfs_nandfs various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
nfsiod General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
nos-tun various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
nvmecontrol Fix typo 2018-10-20 21:13:57 +00:00
pfctl pfctl test: Add a test for macro names with a space in it 2018-10-28 05:50:04 +00:00
pflogd DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
ping Allow dhclient and ping to build WITHOUT_DYNAMICROOT 2018-09-09 17:26:44 +00:00
ping6 General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
quotacheck quotacheck: build with WARNS=3 2018-06-16 23:47:59 +00:00
rcorder rcorder(8): add support for /etc/rc.resume, so it calls "rcorder -k resume" 2018-10-27 17:21:13 +00:00
reboot Fix "fasthalt" to halt instead of reboot 2018-09-14 18:12:30 +00:00
recoverdisk SPDX: use the Beerware identifier. 2017-11-30 20:33:45 +00:00
resolvconf sbin: normalize paths using SRCTOP-relative paths or :H when possible 2017-03-04 11:33:01 +00:00
restore Re-enable reading byte swapped NFS_MAGIC dumps. 2018-08-11 16:12:23 +00:00
route route(8): correctly return exit status when "-q" flag is used. 2018-10-27 07:59:19 +00:00
routed When bind fails, make sure we closed the socket we tried to bind the 2017-12-28 05:34:24 +00:00
rtsol DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
savecore Move etc/minfree to sbin/savecore/. 2018-08-04 22:15:59 +00:00
sconfig DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
setkey General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
shutdown shutdown: Fix r327476 by adding init 2018-01-02 09:02:42 +00:00
spppcontrol various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
sunlabel General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
swapon General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
sysctl sysctl(8): Add a standard exit status section. 2018-09-24 20:46:45 +00:00
tests Merge ^/user/ngie/release-pkg-fix-tests to unbreak how test files are installed 2016-05-04 23:20:53 +00:00
tunefs Fix spelling of an error message and add warning to another error 2018-10-17 16:54:13 +00:00
umount umount: remove sync(2) call when used with -f 2018-09-13 13:57:42 +00:00
zfsbootcfg DIRDEPS_BUILD: Update dependencies. 2017-10-31 00:07:04 +00:00
Makefile Rename be(1) to bectl(8); continues to live in /sbin 2018-07-24 13:21:44 +00:00
Makefile.amd64 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.arm
Makefile.i386 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.inc
Makefile.mips
Makefile.powerpc64 NVME support is only for x86 and powerpc64. 2018-06-14 01:15:19 +00:00
Makefile.sparc64