From mboxrd@z Thu Jan 1 00:00:00 1970 From: Herbert Xu Subject: [0/3] bridge: Do not send multicast queries by default Date: Fri, 13 Apr 2012 20:36:41 +0800 Message-ID: <20120413123641.GA758@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: "David S. Miller" , netdev@vger.kernel.org Return-path: Received: from sting.hengli.com.au ([178.18.18.71]:33590 "EHLO fornost.hengli.com.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754102Ab2DMMgq (ORCPT ); Fri, 13 Apr 2012 08:36:46 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Hi: 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. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt