Re: Possible networking regression in 3.6.0

David Miller
2012-10-01T20:01:22Z

From: Dave Jones <davej@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.