Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751169AbWIMUVT (ORCPT ); Wed, 13 Sep 2006 16:21:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751074AbWIMUVT (ORCPT ); Wed, 13 Sep 2006 16:21:19 -0400 Received: from minus.inr.ac.ru ([194.67.69.97]:36755 "HELO ms2.inr.ac.ru") by vger.kernel.org with SMTP id S1750864AbWIMUVS (ORCPT ); Wed, 13 Sep 2006 16:21:18 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=ms2.inr.ac.ru; b=DhiDyB+9E9LNPkyUaenTHQKWm/b30RVpkr4d4mCiVtXKiUxd4qbHG5sgd/63FGzqJQOhEEf1g94jZNBWkJneT1Mc12ppKVA4trnCuekArqKW42sZcvcsqztUXpz75FEUIKeDY8qEK0uOUWKHKBx13k3m+NTueDqDCDdrWX6UkNU=; Date: Thu, 14 Sep 2006 00:20:29 +0400 From: Alexey Kuznetsov To: David Stevens Cc: Jeff Layton , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netdev-owner@vger.kernel.org Subject: Re: [PATCH] make ipv4 multicast packets only get delivered to sockets that are joined to group Message-ID: <20060913202029.GA4666@ms2.inr.ac.ru> References: <1158156835.15449.40.camel@dantu.rdu.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 631 Lines: 18 Hello! > IPv6 behaves the same way. Actually, Linux IPv6 filters received multicasts, inet6_mc_check() does this. IPv4 does not. I remember that attempts to do this were made in the past and failed, because some applications, related to multicast routing, did expect to receive all the multicasts even though they did not join any multicast addresses. So, it was left intact. Alexey - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/