From mboxrd@z Thu Jan 1 00:00:00 1970 From: Veaceslav Falico Subject: Re: Bonding with tun-devices Date: Wed, 21 May 2014 17:54:34 +0200 Message-ID: <20140521155434.GC6295@redhat.com> References: <537CB13A.3030100@markas-al-nour.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Cc: netdev@vger.kernel.org To: Linus Gasser Return-path: Received: from mx1.redhat.com ([209.132.183.28]:25853 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751018AbaEUPzA (ORCPT ); Wed, 21 May 2014 11:55:00 -0400 Content-Disposition: inline In-Reply-To: <537CB13A.3030100@markas-al-nour.org> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, May 21, 2014 at 02:59:22PM +0100, Linus Gasser wrote: >Dear list, > >I'm trying to create a bonded interface using tun-devices created by the > >ssh -NTCf -w 0:0 > >command. The reason is that I'm behind a satellite connection with >per-stream limited bandwidth... > >On some older kernels everything was fine, and I could do: > ># ssh -NTCf -w 0:0 web ># ssh -NTCf -w 1:1 web ># modprobe bonding mode=0 miimon=100 ># ifconfig bond0 172.16.0.1 netmask 255.255.255.0 ># ifconfig bond0 hw ether 12:34:56:78:9a ># ifenslave bond0 tun0 tun1 It should fail here, as tun (from the first approach*) doesn't have ndo_set_mac_address, and bonding relies on that, *unless* fail_over_mac is set to 1. Could you try setting fail_over_mac = 1 on modprobe or via sysfs and retesting? * I've tried to quickly recreate your setup but hit a panic (already submitted a fix). Also, enabling debug for bonding (via dynamic_debug or anything else) and attaching the output would help a lot. Thank you! > >on one side and > ># modprobe bonding mode=0 miimon=100 ># ifconfig bond0 172.16.0.2 netmask 255.255.255.0 ># ifconfig bond0 hw ether 12:35 ># ifenslave -f bond0 tun0 tun1 ># ping 172.16.0.1 > >on the other side. On a newer kernel (>3.14) this doesn't work (at >least not on linux-armv7), while on 3.13 it does work under >linux-armv7. Now I've been told to use the iproute2-suite, as >ifenslave is deprecated. But if I try to do > ># ssh -NTCf -w 0:0 web ># ssh -NTCf -w 1:1 web ># ip link add name bond1 type bond ># ip link set dev tun0 master bond1 > >it gives me an error > >RTNETLINK answers: Operation not supported > >Any idea what I'm doing wrong? > >Linus >-- >To unsubscribe from this list: send the line "unsubscribe netdev" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html