netdev - Re: [0/3] bridge: Do not send multicast queries by default

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Message-Id: <20120415.125225.1400564852542689459.davem@davemloft.net>
Date:	Sun, 15 Apr 2012 12:52:25 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.hengli.com.au
Cc:	netdev@...r.kernel.org
Subject: Re: [0/3] bridge: Do not send multicast queries by default

From: Herbert Xu <herbert@...dor.hengli.com.au>
Date: Fri, 13 Apr 2012 20:36:41 +0800

> This series of patches is aimed to change the default multicast
> snooping behaviour to one that is safer to deploy in the wild.
> 
> There have been numerous reports of switches misbehaving with
> our current behaviour of sending general queries, presumably
> because we're using a zero source IP address which is unavoidable
> as using anything else would interfere with multicast querier
> elections (incidentally, I noticed that our IPv6 code has been
> "fixed" to not use zero source addresses, which is wrong as we
> may end up being THE MLD querier in a network).
> 
> Since our queries aren't actually required for multicast snooping
> to function, but is merely an optimisation mostly for faster
> start-up convergence, I think we should disable this by default.

All applied to net-next, thanks Herbert.
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