From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [0/3] bridge: Do not send multicast queries by default Date: Sun, 15 Apr 2012 12:52:25 -0400 (EDT) Message-ID: <20120415.125225.1400564852542689459.davem@davemloft.net> References: <20120413123641.GA758@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: herbert@gondor.hengli.com.au Return-path: Received: from shards.monkeyblade.net ([198.137.202.13]:37372 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755713Ab2DOQy0 (ORCPT ); Sun, 15 Apr 2012 12:54:26 -0400 In-Reply-To: <20120413123641.GA758@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: From: Herbert Xu Date: Fri, 13 Apr 2012 20:36:41 +0800 > This series of patches is aimed to change the default multicast > snooping behaviour to one that is safer to deploy in the wild. > > There have been numerous reports of switches misbehaving with > our current behaviour of sending general queries, presumably > because we're using a zero source IP address which is unavoidable > as using anything else would interfere with multicast querier > elections (incidentally, I noticed that our IPv6 code has been > "fixed" to not use zero source addresses, which is wrong as we > may end up being THE MLD querier in a network). > > Since our queries aren't actually required for multicast snooping > to function, but is merely an optimisation mostly for faster > start-up convergence, I think we should disable this by default. All applied to net-next, thanks Herbert.