Re: Possible networking regression in 3.6.0

Edivaldo de Araújo Pereira
2012-10-02T17:25:23Z

HEric Dumazet <eric.dumazet <at> gmail.com> writes:

>
> On Mon, 2012-10-01 at 16:01 -0400, David Miller wrote:
> > From: Dave Jones <davej <at> redhat.com>
> > Date: Mon, 1 Oct 2012 15:34:34 -0400
> >
> > > On Mon, Oct 01, 2012 at 11:15:50AM +0200, Eric Dumazet wrote:
> > > > >
> > > > > $ netstat -s
> > > > > Icmp:
> > > > > 4 ICMP messages received
> > > > > 4 input ICMP message failed.
> > > > > ICMP input histogram:
> > > > > echo replies: 4
> > > >
> > > > So icmp replies come back and are delivered to host instead of being
> > > > forwarded.
> > > >
> > > > I wonder if MASQUERADE broke...
> > >
> > > I hit something that sounds just like this a few months back..
> > > http://lists.openwall.net/netdev/2012/07/25/53
> > >
> > > It "went away" a few builds later, but I've seen it happen
> > > again from time to time.
> >
> > Yep I remembe that report.
> >
> > If you can find a way to more reliably trigger the case, that would
> > help us immensely.
>
> I am building a KMEMCHECK kernel, as a last try before my night ;)
>
>
i,

I'm facing this kind of problem, too, but it is a little different; from the
kvm guest I can ping the local host and any host outside my local (physical)
network, but cannot ping other hosts in the local (physical) net. This happens
whith guests in a virtual switch (vde) or in any bridged tun/tap. I switched
back to 3.5.4, for now.

Thanks
Edivaldo de Araújo Pereira