From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149AbZBQUKu (ORCPT ); Tue, 17 Feb 2009 15:10:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753534AbZBQUK3 (ORCPT ); Tue, 17 Feb 2009 15:10:29 -0500 Received: from g1t0028.austin.hp.com ([15.216.28.35]:15507 "EHLO g1t0028.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753429AbZBQUK2 (ORCPT ); Tue, 17 Feb 2009 15:10:28 -0500 Message-ID: <499B19AF.1000003@hp.com> Date: Tue, 17 Feb 2009 15:10:23 -0500 From: Brian Haley Organization: Open Source and Linux Organization User-Agent: Thunderbird 2.0.0.19 (X11/20090105) MIME-Version: 1.0 To: Andrey Borzenkov CC: "Rafael J. Wysocki" , netdev@vger.kernel.org, bonding-devel@lists.sourceforge.net, =?ISO-8859-1?Q?=22J=2EA=2E_Magall?= =?ISO-8859-1?Q?=F3n=22?= , Linux Kernel Mailing List Subject: Re: 2.6.29 regression? Bonding tied to IPV6 in 29-rc5 References: <20090217095232.5da06b9f@werewolf.home> <200902172001.41804.arvidjaar@mail.ru> <200902172117.22671.arvidjaar@mail.ru> In-Reply-To: <200902172117.22671.arvidjaar@mail.ru> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andrey Borzenkov wrote: > On 17 of February 2009 20:01:38 Andrey Borzenkov wrote: >> Forward to bonding and netdev >> >> On 17 of February 2009 11:52:32 J.A. Magallón wrote: >>> Hi all... >>> >>> Don't know if this is specific for -rc5, I have jumped from 28.4 to >>> 29-rc5. In this latest kernel, I can not install 'bonding' module >>> if 'ipv6' is disabled to load via modprobe.conf: >>> >>> install ipv6 /bin/true >>> >>> Trying bonding gives this dmesg: >>> >>> bonding: Unknown symbol ndisc_build_skb >>> bonding: Unknown symbol in6_dev_finish_destroy >>> bonding: Unknown symbol ndisc_send_skb >>> bonding: Unknown symbol unregister_inet6addr_notifier >>> bonding: Unknown symbol register_inet6addr_notifier >>> >>> Commenting the line in modprobe.conf makes things smooth again. >>> We can not disable ipv6 anymore ? >> If IPv6 is disable in kernel config bonding loads. But I think it is >> regression, it should be possible to disable IPv6 if not required. > > This hard dependency was apparently introduced by this commit: > > commit 305d552accae6afb859c493ebc7d98ca3371dae2 > Author: Brian Haley > Date: Tue Nov 4 17:51:14 2008 -0800 > > bonding: send IPv6 neighbor advertisement on failover I initially had bonding IPv6 support as a Kconfig option, but it was decided it would be cleaner if it just got built-in whenever CONFIG_IPV6 was set like SCTP, with the assumption you might want it. Is it a common configuration to not allow a module to load like you're doing in modprobe.conf? I don't know how hard it would be to rip this out into it's own bonding_ipv6.ko module, simply turning-off CONFIG_IPV6 seems better. -Brian