From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Madore Subject: atl1e Ethernet driver not seeing packets sent to 33:33:00:00:00:01 multicast Date: Tue, 11 Nov 2008 14:31:08 +0100 Message-ID: <20081111133108.GA7124@clipper.ens.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Linux Kernel Mailing-List , Linux NetDev Mailing-List , atl1-devel@lists.sourceforge.net Return-path: Received: from nef2.ens.fr ([129.199.96.40]:3028 "EHLO nef2.ens.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753334AbYKKNbM (ORCPT ); Tue, 11 Nov 2008 08:31:12 -0500 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Hi, This is on Ubuntu 8.10 "Intrepid Ibex" using its stock kernel (2.6.27-7.16), with an Eee PC 901 whose Ethernet adapter is (according to lspci): 04:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0) using driver atl1e of said kernel. _Unless_ the network device is put in promiscuous mode (e.g., by running tcpdump), it does not see packets sent to Ethernet multicast address 33:33:00:00:00:01. E.g., IPv6 packets to ff02::1 (ip6-allnodes) are not seen. Practical consequence: IPv6 is broken, because router advertisements are not received. ("ip maddr show" does give "link 33:33:00:00:00:01" among the subscribed multicast addresses, so it's not a config problem.) Is this a known problem? Is there a patch fixing it? Until then, a workaround is to put the device in promiscuous mode. Happy hacking, -- David A. Madore (david.madore@ens.fr, http://www.madore.org/~david/ )