From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ferenc Wagner Subject: ipv6 debugging Date: Mon, 18 Feb 2008 15:06:19 +0100 Message-ID: <87zltyjr50.fsf@tac.ki.iif.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from tac.ki.iif.hu ([193.6.222.43]:57467 "EHLO tac.ki.iif.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751382AbYBROiv (ORCPT ); Mon, 18 Feb 2008 09:38:51 -0500 Received: from wferi by tac.ki.iif.hu with local (Exim 4.63) (envelope-from ) id 1JR6dP-0007Zp-47 for netdev@vger.kernel.org; Mon, 18 Feb 2008 15:06:19 +0100 Sender: netdev-owner@vger.kernel.org List-ID: Hi, I'm kindly asking for some debugging tips with the following problem: a machine is running Linux 2.6.24.2, several 802.1q VLAN-s over active/backup bonding over two physical interfaces. Everything is allright, except for after a reboot, there's no IPv6, while IPv4 works. The router's ARP(6) table is empty, the machine doesn't answer ping6. However, if I start tcpdump -i bond0 ip6, everything is allright again. There are some indications that after some period without IPv6 traffic, the same can happen again. Are there known issues which can exhibit themselves like this? Other very similar setups don't show this erratic behaviour. I know that the above doesn't give a fully detailed picture, but thought that I'd better ask before taking the setup into pieces. -- Thanks for your thoughts, Feri.