From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Frederic Sowa Subject: Re: [PATCH/RFC] ipv6: fib: Drop cached routes with dead neighbours on fib GC Date: Fri, 11 Jan 2013 15:01:19 +0100 Message-ID: <20130111140119.GC8436@order.stressinduktion.org> References: <1357753459-12872-1-git-send-email-roland@kernel.org> <20130111134058.GB8436@order.stressinduktion.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 To: Roland Dreier , "David S. Miller" , netdev@vger.kernel.org, Roland Dreier Return-path: Received: from order.stressinduktion.org ([87.106.68.36]:49411 "EHLO order.stressinduktion.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752409Ab3AKOBV (ORCPT ); Fri, 11 Jan 2013 09:01:21 -0500 Content-Disposition: inline In-Reply-To: <20130111134058.GB8436@order.stressinduktion.org> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Jan 11, 2013 at 02:40:58PM +0100, Hannes Frederic Sowa wrote: > On Wed, Jan 09, 2013 at 09:44:19AM -0800, Roland Dreier wrote: > > From: Roland Dreier > > > > This patch is as much bug report as it is a proposal to merge this > > specific patch. The problem is definitely real; we hit it in a > > situation where we have two systems connected back-to-back with two > > bonded links between them, one system reboots, and the other system > > gets NETDEV_CHANGEADDR. This patch definitely fixes that case for us, > > but I'm not sure it's the right place to fix this, or if it covers all > > the cases where this could happen. Anyway... > > Great analysis, thanks! > > There is bug report which indicates a fix to this problem could > also solve some other corner cases regarding neighbour discovery: > https://bugzilla.kernel.org/show_bug.cgi?id=42991 The report I meant was actually not referred in this bug report: http://article.gmane.org/gmane.linux.network/224832 ENETDOWN was also observed via bridges.