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From: Dimitry Andric <dimitry@andric.com>
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To: "Bruce A. Mah" <bmah@freebsd.org>
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Cc: freebsd-net@freebsd.org, freebsd-stable@freebsd.org, jhay@freebsd.org
Subject: Re: IPv6 over gif(4) broken in 6.2-RELEASE?
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Bruce A. Mah wrote:
> I've convinced myself that this problem needs to be tested in isolation
> (i.e. you have complete control over both ends of the tunnel) because
> incoming packets over the tunnel cause the host route to get added
> automatically if it wasn't there already.
> 
> After reading the code and discussing this with a couple folks, I've
> managed to convince myself that 1.48.2.14 and 1.48.2.15 (and their
> analogues on HEAD) need to go away.  I've committed diffs that back
> these out, and they solve the problem for me in my testing (which I've
> done with two VMs in isolation).  The applicable revisions for nd6.c are
> 1.74 (HEAD) and 1.48.2.18 (RELENG_6).  Updating up to (or beyond) these
> revisions should clear up the problem.

Confirmed.  I've updated the machine on which I originally had this
problem to -STABLE as of today, and the problem has disappeared.

Thanks!