netdev - Re: [PATCH] bridge: fix parsing of MLDv2 reports

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Message-Id: <20150522.150903.570785706419447424.davem@davemloft.net>
Date:	Fri, 22 May 2015 15:09:03 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	cascardo@...hat.com
Cc:	stephen@...workplumber.org, bridge@...ts.linux-foundation.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	yoshfuji@...ux-ipv6.org, Rik.Theys@...t.kuleuven.be
Subject: Re: [PATCH] bridge: fix parsing of MLDv2 reports

From: Thadeu Lima de Souza Cascardo <cascardo@...hat.com>
Date: Fri, 22 May 2015 12:18:59 -0300

> When more than a multicast address is present in a MLDv2 report, all but
> the first address is ignored, because the code breaks out of the loop if
> there has not been an error adding that address.
> 
> This has caused failures when two guests connected through the bridge
> tried to communicate using IPv6. Neighbor discoveries would not be
> transmitted to the other guest when both used a link-local address and a
> static address.
> 
> This only happens when there is a MLDv2 querier in the network.
> 
> The fix will only break out of the loop when there is a failure adding a
> multicast address.
 ...
> Reported-by: Rik Theys <Rik.Theys@...t.kuleuven.be>
> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@...hat.com>
> Tested-by: Rik Theys <Rik.Theys@...t.kuleuven.be>

Applied and queued up for -stable, thanks.
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