Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 03 Dec 2016 09:53:00 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 214746] Carp ipv6 duplicate address detection
Message-ID:  <bug-214746-2472-lWhGcPKh4q@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-214746-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-214746-2472@https.bugs.freebsd.org/bugzilla/>

next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D214746

--- Comment #2 from Athanasios Douitsis <aduitsis@douitsis.com> ---
(In reply to Kubilay Kocak from comment #1)

Running FreeBSD 10.3-RELEASE-p11 #0: Mon Oct 24 18:49:24 UTC 2016
root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64 on b=
oth
nodes.

This works (dead:beef instead of my real prefix):

ifconfig_vmx0_ipv6=3D"inet6 accept_rtadv dead:beef::60/64"
ifconfig_vmx0_alias1=3D"inet6 dead:beef::95/64 no_dad vhid 34 pass bar=E2=
=80=9D

dead:beef::60 is node0 and dead:beef::61 is node1. Both have dead:beef::95/=
64
as the common carp IPv6 address. Vhid 34 is randomly chosen.=20

For IPv4, I'm using a different vhid and pass, just to be on the safe side.

Removing the no_dad from ifconfig_vmx0_alias1 and rebooting the BACKUP node
causes the problem to appear. Backup node will compain about DAD upon reboo=
t,
ifconfig will say dead:beef::95/64 duplicated, so it can't really be used.=
=20

Afterwards, trying to manualy issue=20

ifconfig inet6 dead:beef::95/64 vhid 34 pass bar

will fail the first time, second time it will go through.

--=20
You are receiving this mail because:
You are the assignee for the bug.=



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-214746-2472-lWhGcPKh4q>