From: James Chapman Subject: Re: Wired behaviour with IPv6 over PPP Date: Thu, 22 May 2008 10:55:36 +0100 Message-ID: <48354318.60202@katalix.com> References: <48341C0B.7010003@interway.ch> <20080522014959.0f6191aa.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Andrew Morton , linux-kernel , netdev@vger.kernel.org To: Matthias Cramer Return-path: Received: from s36.avahost.net ([74.53.95.194]:38553 "EHLO s36.avahost.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754489AbYEVJzv (ORCPT ); Thu, 22 May 2008 05:55:51 -0400 In-Reply-To: <20080522014959.0f6191aa.akpm@linux-foundation.org> Sender: netdev-owner@vger.kernel.org List-ID: Andrew Morton wrote: > On Wed, 21 May 2008 14:56:43 +0200 Matthias Cramer wrote: > >> Hi All >> >> I have a very wired behaviour when doing IPv6 over PPPoE. >> >> The situation: >> >> A linux box connected to a DSL Modem, on the other side is a Cisco LNS which terminates the PPP session (actually L2TP). >> I have control over both ends. >> >> When I have net.ipv6.conf.all.forwarding set to 0 then the ppp Interface gets a IPv6 address from the Cisco via IP6CP. >> When I have net.ipv6.conf.all.forwarding set to 1 them the ppp Interface does not get an address, it has only a normal link local address. What do you mean by normal link local address? >> When I start the ppp session with forwarding set to 0 I can ping out and there exists a default route to ppp0 , then I switch forwarding to 1 >> the default route disappears and therefore routing does not work any longer. Did this work with previous kernel versions? Does pppd log any errors? >> >> Is this a known behaviour ? >> >> Or am I doing something the wrong way ? >> >> Kernel version is 2.6.25 -- James Chapman Katalix Systems Ltd http://www.katalix.com Catalysts for your Embedded Linux software development