From mboxrd@z Thu Jan 1 00:00:00 1970 From: Flavio Leitner Subject: Re: restoring IP multicast addresses when restarting the interface. Date: Tue, 24 Apr 2012 19:19:34 -0300 Message-ID: <20120424191934.37755018@asterix.rh> References: <20120420212533.78903e3a@asterix.rh> <20120423121425.GA29883@gondor.apana.org.au> <20120424153023.0913956e@asterix.rh> <20120424.170004.1811627706738841106.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: David Miller , herbert@gondor.hengli.com.au, netdev@vger.kernel.org To: David Stevens Return-path: Received: from mx1.redhat.com ([209.132.183.28]:34102 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757146Ab2DXWTt (ORCPT ); Tue, 24 Apr 2012 18:19:49 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 24 Apr 2012 14:28:33 -0700 David Stevens wrote: > netdev-owner@vger.kernel.org wrote on 04/24/2012 02:00:04 PM: > > > From: David Miller > > > >> I don't see why they should disappear when the interface goes > > >> down and then comes back up since these ultimately come from > > >> application sockets which continue to exist after a down/up. > > > > > > Yeah, but that's not how things used to work before, so my > > > question is if the kernel should be responsible for keeping > > > the subscription or the application. > > > > > > If the admin puts down the interface and remove the module, > > > for instance, then the multicast subscription is gone. > > > Should the application monitor for that then? > > > > > > David? Any thoughts? > > > > David Stevens at IBM and Herbert at the current multicast > > experts, so I will defer to them. > > I think restoring the hardware multicast filter on device up > is useful, desirable and not a bug. :-) Alright, thanks everyone! fbl