From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: IPv6 duplicate address detection erroneously marking address as duplicate when a host receives its own multicast packets? Date: Wed, 21 Apr 2010 22:30:22 -0700 (PDT) Message-ID: <20100421.223022.126085425.davem@davemloft.net> References: <4BCFA615.8060205@hp.com> <20100422024140.GA7215@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: brian.haley@hp.com, sam.cannell@catalyst.net.nz, netdev@vger.kernel.org To: herbert@gondor.apana.org.au Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:60583 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750993Ab0DVFaR (ORCPT ); Thu, 22 Apr 2010 01:30:17 -0400 In-Reply-To: <20100422024140.GA7215@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: From: Herbert Xu Date: Thu, 22 Apr 2010 10:41:40 +0800 > Brian Haley wrote: >> >> Well, my initial reaction is XVM is doing the wrong thing looping-back >> multicast packets. You can try the following (untested) patch, I can >> only confirm it compiles. > > I agree, whatever is looping the packet back should be fixed. Ethernet does not send multicasts to itself, so we're definitely not going to cater to this XVM behavior.