netdev - Re: Bonding and Neighbour Discovery on IPv6-only devices

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Message-Id: <200809151416.49447.alexandre.sidorenko@hp.com>
Date:	Mon, 15 Sep 2008 14:16:49 -0400
From:	Alex Sidorenko <alexandre.sidorenko@...com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Bonding and Neighbour Discovery on IPv6-only devices

On September 15, 2008 02:00:15 pm Jeff Garzik wrote:
> On Mon, Sep 15, 2008 at 01:35:16PM -0400, Alex Sidorenko wrote:
> > Hello,
> >
> > I suspect that there are some problems while switching slaves manually on
> > IPv6-only bonds. I have tested that this does not work on 2.6.18 kernel
> > (RHEL5). I looked at recent sources (2.6.26) and even though there were
> > multiple changes in bonding code, I still don't see how this could work.
> >
> > Testing setup
> > -------------
> >
> > Two ethernets enslaved (eth2 and eh3), active-backup bond has IPv6-only
> > address (no IPv4)
> >
> > Everything works fine, but if we switch the slave doing
> >
> > # ifenslave -c bond0 eth3
> >
> > the incoming ping6 to this host stops for up to several minutes (waiting
> > until the switch updates its caches).
>
> We _just_ put in an IPv6 fix, FWIW...
>

Hi Jeff,

do you mean the patch for ALB/TLB bonds? I looked at it but I still don't 
understand how this helps for active-backup case.

Alex


-- 
------------------------------------------------------------------
Alexandre Sidorenko             email: alexs@...inux.canada.hp.com
Global Solutions Engineering:   Unix Networking
Hewlett-Packard (Canada)
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