netdev - Re: [PATCH] bridge: don't flood multicast packets if no snooping entry

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Message-ID: <20121012014852.GA17025@gondor.apana.org.au>
Date:	Fri, 12 Oct 2012 09:48:52 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Lin Ming <minggr@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] bridge: don't flood multicast packets if no snooping
 entry

On Fri, Oct 12, 2012 at 09:17:23AM +0800, Lin Ming wrote:
> From: Lin Ming <mlin@...pku.edu.cn>
> 
> Currently, multicast packets will be flood even if there is no
> mutlicast snooping entry attached to port.
> 
> With IGMP snooping enabled, we should stop sending multicast packets
> if there is no member joined.

Hmm, the default is deliberately this way so that we don't disrupt
traffic when we boot up.  If you want to stop flooding unknown groups
by default you have to make it an option.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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