From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cong Wang Subject: Re: [Patch net-next v2] bridge: do not expire mdb entry as long as bridge still uses it Date: Thu, 25 Apr 2013 18:07:01 +0800 Message-ID: <1366884421.11488.4.camel@cr0> References: <1366878083-22797-1-git-send-email-amwang@redhat.com> <20130425083704.GA27420@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Stephen Hemminger , "David S. Miller" , Adam Baker To: Herbert Xu Return-path: Received: from mx1.redhat.com ([209.132.183.28]:43980 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756207Ab3DYKHZ (ORCPT ); Thu, 25 Apr 2013 06:07:25 -0400 In-Reply-To: <20130425083704.GA27420@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 2013-04-25 at 16:37 +0800, Herbert Xu wrote: > > As you're saying the bridge interface's subscription is expiring > incorrectly, the question is why aren't we receiving those group > reports from ourselves, which should be sent out periodically if > we were subscribed to the group? I thought IGMP report is optional as long as the multicast traffic is still running. If it is mandatory, I don't see any IGMP report sending out from guest, so the bug is in IPv4 multicast code rather than bridge code. But this can't explain why guests can communicate with each other. :)