Date: Mon, 26 Sep 2011 12:05:27 -0400 From: Gary Palmer <gpalmer@freebsd.org> To: Matt Smith <matt@xtaz.co.uk> Cc: freebsd-net@freebsd.org Subject: Re: gif interface not passing IPv6 packets Message-ID: <20110926160527.GD57708@in-addr.com> In-Reply-To: <CAD0n1vESKKmBXPqud07TmhsUJeTecktPumLWuMxp=rDUk0NuBg@mail.gmail.com> References: <CAD0n1vG0fvHMkBxxLRq0Y%2Bx9rDt5AXb4WZhq-oxuqpti4mQC7w@mail.gmail.com> <20110926132923.GB57708@in-addr.com> <CAD0n1vFB6h9h%2BBe9DOCwxi9aECBvkTvf8g7C_tsQxXXFv90XKw@mail.gmail.com> <20110926142114.GC57708@in-addr.com> <CAD0n1vESKKmBXPqud07TmhsUJeTecktPumLWuMxp=rDUk0NuBg@mail.gmail.com>
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On Mon, Sep 26, 2011 at 04:04:00PM +0100, Matt Smith wrote: > On 26 September 2011 15:21, Gary Palmer <gpalmer@freebsd.org> wrote: > > Smells like a routing table problem or similar configuration problem. > > On my tunnel endpoint, admitedly running 7.4 not 8.x or head, pings > > to the LOCAL endpoint of the gif0 tunnel go over lo0, not the external > > interface (gif0). ?I believe that is true for all IPv4 or IPv6 traffic. > > Interesting. You could be right then. But I still don't understand > what could have changed as the rc.conf configuration for this is > identical to what it was before the power cut. The deprecated part > just makes the outgoing source address algorithm favour the vr0 > address, but the same happens no matter if I include that or not. Not sure, however an experiment may be in order # ifconfig gif0 ifconfig: interface gif0 does not exist # ifconfig gif0 create # ifconfig gif0 tunnel <lan IP> 1.2.3.4 # ifconfig gif0 inet6 2abc::2 2abc::1 prefixlen 128 # netstat -nr -f inet6 | grep 2abc 2abc::1 link#8 UHL gif0 2abc::2 link#8 UHL lo0 # ifconfig gif0 destroy See if your routing table is correct after the test you proposed earlier. Gary
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