From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Jones <davej@redhat.com>
Subject: Re: Possible networking regression in 3.6.0
Date: Mon, 1 Oct 2012 15:34:34 -0400
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Cc: Chris Clayton <chris2553@googlemail.com>,
	David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
	gpiez@web.de
To: Eric Dumazet <eric.dumazet@gmail.com>
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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.

	Dave