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
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, [email protected]
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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