[Qemu-devel] Re: BUG - qdev - partial loss of network connectivity

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Sep 27, 2010 at 11:32:03PM +0200, Leszek Urbanski wrote:
> <20100926154324.GD21843@redhat.com>; from Michael S. Tsirkin on Sun, Sep 26, 2010 at 17:43:24 +0200
> 
> > > > >It's vanilla 2.6.32.22, but I also reproduced this on Debian's 2.6.32-23
> > > > >(based on 2.6.32.21).
> > > > >
> > > > >If offload is the only difference, I'll play with different offload
> > > > >options and check which one causes it.
> > > > >   
> > > > 
> > > > It's not technically the only difference but it's the most likely 
> > > > culprit IMHO.
> > > 
> > > udp fragmentation offload is definitely the culprit.
> > 
> > I see. Most likely guest bug - won't be the first bug around UFO.
> > If so pls copy netdev linux-nfs and virtualization.
> > Do you see anything in dmesg? Can try 2.6.36-rc5?
> 
> (for reference: first post is at:
> http://lists.nongnu.org/archive/html/qemu-devel/2010-09/msg01685.html )
> 
> I can't reproduce it on 2.6.36-rc5. Do you have an idea which patch may have
> fixed it, or should I dissect?

bisect, yes: there were many UFO related patches since 2.6.32.

-- 
MST