From mboxrd@z Thu Jan 1 00:00:00 1970 From: md@Linux.IT (Marco d'Itri) Subject: Re: broken link-local multicast? Date: Mon, 18 Feb 2008 02:21:24 +0100 Message-ID: <20080218012124.GA13035@bongo.bofh.it> References: <20080214162834.GA29186@bongo.bofh.it> Reply-To: md@linux.it, netdev@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Pekka Savola , David Stevens Return-path: Received: from attila.bofh.it ([213.92.8.2]:54331 "EHLO attila.bofh.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758131AbYBRBVn (ORCPT ); Sun, 17 Feb 2008 20:21:43 -0500 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Feb 15, Pekka Savola wrote: >> root@frwl-5a:~# ping6 -c 1 -I eth1 ff02::1 >> connect: Network is unreachable > > Maybe 'netstat -gn' could give clues, because you should be receiving a > response at least from the loopback address. Maybe your loopback > interface has went down, or ospf6d took it down and back up (at least > some time ago, kernel's v6 got very confused after that). The loopback is up. ospf6d /may/ have done something to it, but I do not know how to check this (and I cannot reboot these servers right now). 1: lo: mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever > You may also want to check out that your link-local address on the > interface you're pinging is still OK. Apparently it is: root@frwl-5a:~# netstat -gn | grep eth1 eth1 1 224.0.0.5 eth1 1 224.0.0.1 eth1 1 ff02::6 eth1 1 ff02::5 eth1 2 ff02::1:ff00:0 eth1 1 ff02::2 eth1 1 ff02::1:ff00:89 eth1 1 ff02::1:ffd8:7dd eth1 1 ff02::1 These (except ff02::1:ffd8:7dd, which is different) are the same addresses of eth0, which works. On Feb 15, David Stevens wrote: > Marco, > You called this a "firewall" -- do you get the same thing > when you have no iptables rules? Yes, I double checked again and reproduced these results with totally empty v6 chains. -- ciao, Marco