repeating crashes with 8.1

[Randy Bush]

>>>>> 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 ?

yes, kernel and world from 21 oct

chris had an idea on retrigger, install a static for a small dest that
points to a hole.  send a packet to the small dest.

randy