Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752684Ab0HQGAJ (ORCPT ); Tue, 17 Aug 2010 02:00:09 -0400 Received: from mail-wy0-f174.google.com ([74.125.82.174]:56622 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750925Ab0HQGAI (ORCPT ); Tue, 17 Aug 2010 02:00:08 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=G8gfznVZ66FWLg5qIL+/Y4yPQnHu2Bqsg/2qkzEok9IqB6EtV/a4WhB2My+RO2i+bP m50JG17zweY8DVk0BOyvh8dGVae7YqEhysuVNk1JwTwr3fLeCCfTTFxIttUG+KzfuKIa YpIzTFh1xp8Qim48wZHZFrkPBIrT7iSzvzo3M= Subject: Re: BUG: IPv6 stops working after a while, needs ip ne del command to reset From: Eric Dumazet To: Thomas Habets Cc: linux-kernel@vger.kernel.org, netdev In-Reply-To: References: <1281953960.2524.23.camel@edumazet-laptop> Content-Type: text/plain; charset="UTF-8" Date: Tue, 17 Aug 2010 08:00:02 +0200 Message-ID: <1282024802.2487.687.camel@edumazet-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2647 Lines: 85 Le mardi 17 août 2010 à 07:35 +0200, Thomas Habets a écrit : > On Mon, 16 Aug 2010, Thomas Habets wrote: > > Am I not allowed to add addresses to lo? That I've deconfigured this address > > and rebooted the box to check if this matters. > > It didn't help. > > > I will re-check ethtool and Cisco router output for mismatches when it breaks > > again to make sure that there's no change or errors counting up. > > IPv6 is currently not working and it's still 1000 Full on both sides > ("show int GiX/Y" and "ethtool eth0"). > No errors in "ethtool -S eth0" or "show int GiX/Y". > > "ethtool eth0" output is the same as yesterday. > > Here's the addresses and routing table as they are now, and have been > since reboot: > > $ ip -6 a > 1: lo: mtu 16436 > inet6 ::1/128 scope host > valid_lft forever preferred_lft forever > 2: eth0: mtu 1500 qlen 1000 > inet6 2a00:800:752:1::5c:2/112 scope global > valid_lft forever preferred_lft forever > inet6 fe80::224:81ff:fea3:4424/64 scope link > valid_lft forever preferred_lft forever > > > $ ip -6 r sh > 2a00:800:752:1::5c:0/112 dev eth0 proto kernel metric 256 mtu 1500 > advmss 1440 hoplimit 4294967295 > > fe80::/64 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 > hoplimit 4294967295 > > default via 2a00:800:752:1::5c:1 dev eth0 metric 1024 mtu 1500 advmss > 1440 hoplimit 4294967295 > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router STALE > > [try ping6 again, no reply] > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router DELAY > > [try ping6 again, no reply] > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router REACHABLE > This seems a bit different than previous mail. Apparently discovery now works ? Could you have a tcpdump on both sides ? Maybe your host is OK, but other side drops your ICMP packets ? > [try ping6 again, no reply] > > Configured network with /etc/network/interfaces: > > auto lo > iface lo inet loopback > > allow-hotplug eth0 > iface eth0 inet static > address x.x.x.x > netmask 255.255.255.252 > broadcast x.x.x.x > gateway x.x.x.x > up ip a a 2a00:800:752:1::5c:2/112 dev eth0 > up ip r a default via 2a00:800:752:1::5c:1 > dns-nameservers x.x.x.x > dns-search xxxx.net -- 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/