netdev - Re: [PATCH v2 net-next 0/6] Allow bridge to function in non-promisc mode

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Message-ID: <5182A531.2030900@redhat.com>
Date:	Thu, 02 May 2013 13:41:05 -0400
From:	Vlad Yasevich <vyasevic@...hat.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
	mst@...hat.com
Subject: Re: [PATCH v2 net-next 0/6] Allow bridge to function in non-promisc
 mode

On 05/02/2013 01:23 PM, Stephen Hemminger wrote:
> Doing research on another problem, I noticed that this would
> break user mode spanning tree (RSTP) code.
>
> The daemon assumes that bridge is promicious mode and therefore
> will receive all link-level multicast packets.
>

Just took another look at RSTP code and I see that's its using
a packet socket with filter to catch STP frames.

Would setting IFF_ALL_MULTI solve the problem?  STP packets
are all multicast.

Thanks
-vlad

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