Re: kernel panic with ipv6 in Xen

[Chris Andrews <chris@nodnol.org>]

Ian Pratt wrote on 09/05/05 05:44:
>>We have a kernel panic on boot under xen when loading the 
>>ipv6 module which was resolved by mounting the device under 
>>dom0 and moving the
>>ipv6 module out of the way. Is this a known problem? Is it 
>>likely to be a xen issue? An ipv6 issue? PEBCAK?
> 
> 
> Interesting. Does anyone use ipv6 with Xen? I can't say I've ever tried.

Yep, works fine. I was able to run a radvd in dom0, bound to xen-br0, which 
gave the domUs global addresses, and dom0 acted as a v6 router fine.

(the box's main LAN interface, eth0, wasn't bound to the bridge, so I didn't 
end up being a radvd for the entire LAN)

> Is this bug easy to reproduce?

Take a box running 2.0.5/2.6.10-xen0 that still has an old 2.6.9-xenU kernel 
lying around, and a domU that has the old 2.6.9-xenU modules available and 
boot the domU on 2.6.9.

i.e., take a 2.0.3 box, upgrade to 2.0.5, and forget to update your domUs' 
module trees and xm configs :)

I seem to remember this happening on previous upgrades, too. Unfortunately I 
don't have the box available right now to test things.


Chris.