From mboxrd@z Thu Jan 1 00:00:00 1970 From: Edivaldo de =?utf-8?b?QXJhw7pqbw==?= Pereira Subject: Re: Possible networking regression in 3.6.0 Date: Tue, 2 Oct 2012 15:27:17 +0000 (UTC) Message-ID: References: <506955F3.8050304@googlemail.com> <1349082950.12401.669.camel@edumazet-glaptop> <20121001193434.GA14236@redhat.com> <20121001.160115.1816241312626722150.davem@davemloft.net> <1349121884.12401.721.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: netdev@vger.kernel.org Return-path: Received: from plane.gmane.org ([80.91.229.3]:48879 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752806Ab2JBRZX (ORCPT ); Tue, 2 Oct 2012 13:25:23 -0400 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1TJ6DP-00052W-Iy for netdev@vger.kernel.org; Tue, 02 Oct 2012 19:25:04 +0200 Received: from 189.125.162.220 ([189.125.162.220]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 02 Oct 2012 19:25:03 +0200 Received: from edivaldoapereira by 189.125.162.220 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 02 Oct 2012 19:25:03 +0200 Sender: netdev-owner@vger.kernel.org List-ID: HEric Dumazet gmail.com> writes: >=20 > On Mon, 2012-10-01 at 16:01 -0400, David Miller wrote: > > From: Dave Jones redhat.com> > > Date: Mon, 1 Oct 2012 15:34:34 -0400 > >=20 > > > On Mon, Oct 01, 2012 at 11:15:50AM +0200, Eric Dumazet wrote: > > > > >=20 > > > > > $ netstat -s > > > > > Icmp: > > > > > 4 ICMP messages received > > > > > 4 input ICMP message failed. > > > > > ICMP input histogram: > > > > > echo replies: 4 > > > >=20 > > > > So icmp replies come back and are delivered to host instead of= being > > > > forwarded. > > > >=20 > > > > I wonder if MASQUERADE broke... > > >=20 > > > I hit something that sounds just like this a few months back.. > > > http://lists.openwall.net/netdev/2012/07/25/53 > > >=20 > > > It "went away" a few builds later, but I've seen it happen > > > again from time to time. > >=20 > > Yep I remembe that report. > >=20 > > If you can find a way to more reliably trigger the case, that would > > help us immensely. >=20 > I am building a KMEMCHECK kernel, as a last try before my night ;) >=20 >=20 i, I'm facing this kind of problem, too, but it is a little different; fro= m the=20 kvm guest I can ping the local host and any host outside my local (phys= ical)=20 network, but cannot ping other hosts in the local (physical) net. This = happens=20 whith guests in a virtual switch (vde) or in any bridged tun/tap. I swi= tched=20 back to 3.5.4, for now. Thanks Edivaldo de Ara=C3=BAjo Pereira