[Pkg-xen-devel] Bug#679533: Bug#679533: Traffic forwarding issue between Xen domU/dom0 and ovs

[Ian Campbell]

On Tue, 2012-07-17 at 19:05 +0200, Hans van Kranenburg wrote:
> On 07/10/2012 08:16 PM, Ian Campbell wrote:
> > On Fri, 2012-06-29 at 16:06 +0200, Hans van Kranenburg wrote:
> >> We're seeing weird behaviour regarding network traffic between a Xen
> >> dom0 and domU. I reported this issue yesterday to the
> >> openvswitch-discuss mailing list, but it seems this could also be a
> >> (regression?) bug in the xen hypervisor or the linux kernel...
> >
> > Did you get any response from the vswitch folks?
> 
> The response from Ben Pfaff (nicira/openvswitch) was like: "I wish I had 
> something to suggest, but this seems like a truly bizarre problem."

That's basically what I was thinking too.

I've had a trawl through the upstream netback fixes and although there
are one or two which sound like they might be relevant none of them are
actually relevant to the version of netback in Squeeze. Likewise for the
netfront driver.

Is the traffic all on-box or is it off box (and does it make a
difference?). There might be some similarities with
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631102

[...]
> ...the first thing to do would be to reproduce this using the exact 
> software/hardware situation it originated in, and that seems to be quite 
> a challenge already...

Right, I'm not sure what else can be done I'm afraid, I'm rather
perplexed :-/

Ian.
-- 
Ian Campbell
Current Noise: Death Angel - Opponents At Sides

There's no saint like a reformed sinner.