Date: Fri, 22 Oct 2010 14:48:06 -0400 From: Mike Tancsa <mike@sentex.net> To: Randy Bush <randy@psg.com> Cc: stable <stable@freebsd.org> Subject: Re: repeating crashes with 8.1 Message-ID: <201010221848.o9MIm7WF096197@lava.sentex.ca> In-Reply-To: <m2k4lab6nh.wl%randy@psg.com> References: <m2zku7cqt5.wl%randy@psg.com> <m2y69rcqjc.wl%randy@psg.com> <201010221416.o9MEGSa0094817@lava.sentex.ca> <m2tykeb9ac.wl%randy@psg.com> <201010221425.o9MEPcWC094867@lava.sentex.ca> <m2k4lab6nh.wl%randy@psg.com>
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At 11:15 AM 10/22/2010, Randy Bush wrote:
> >>> Do you know how this panic is triggered ? Are you able to
> >>> create it on demand ?
> >>
> >> no i do not. bring server up and it'll happen in half an hour.
> >> and the server was happy for two months. so i am thinking hardware.
> >
> > Perhaps. The reason I ask is that I had a box go down last night with
> > the same set of errors. The box has a number of ipv6 routes, but its
> > next hop was down and the problems started soon after. So I wonder if
> > it has something to do with that. Do you have ipv6 on this box and
> > are all the next hop addresses correct / reachable ?
> >
> > Oct 22 02:06:02 i4 kernel: em1: discard frame w/o packet header
> > Oct 22 02:06:10 i4 kernel: em2: discard frame w/o packet header
> > Oct 22 02:06:21 i4 kernel: em1: discard frame w/o packet header
>
>it was co-incident with a border router being taken down for new router
>install. that router was the v6 exit the servers was using. i have now
>pointed default6 to a different exit. the server seems happy.
Are you servers still up ? I guess the question now is how to
trigger this problem on demand. Perhaps lots of inbound ipv6 traffic
with a bad next hop out ? How recent are you sources ? The kernel
said Oct 21st. Were the sources from then too ?
---Mike
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Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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