Re: repeating crashes with 8.1

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 [phone]
Sentex Communications,                            [e-mail]
Providing Internet since 1994                    www.sentex.net
Cambridge, Ontario Canada                         www.sentex.net/mike

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