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Date: Fri, 22 Oct 2010 11:15:30 -0400
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From: Randy Bush <randy@psg.com>
To: Mike Tancsa <mike@sentex.net>
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Cc: stable <stable@freebsd.org>
Subject: Re: repeating crashes with 8.1
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>>> 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.

THANK YOU!!!!

randy