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From: Felix Fietkau <nbd@nbd.name>
Message-ID: <21c1c361-eef0-aa53-ecd5-b5154c51462d@nbd.name>
Date: Fri, 6 Jan 2017 14:54:55 +0100
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Subject: Re: [Bridge] [PATCH net-next] bridge: multicast to unicast
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To: Johannes Berg <johannes@sipsolutions.net>, =?UTF-8?Q?Linus_L=c3=bcssing?= <linus.luessing@c0d3.blue>, netdev@vger.kernel.org
Cc: bridge@lists.linux-foundation.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, "David S . Miller" <davem@davemloft.net>, Michael Braun <michael-dev@fami-braun.de>

On 2017-01-06 14:54, Johannes Berg wrote:
> 
>> The bridge layer can use IGMP snooping to ensure that the multicast
>> stream is only transmitted to clients that are actually a member of
>> the group. Can the mac80211 feature do the same?
> 
> No, it'll convert the packet for all clients that are behind that
> netdev. But that's an argument for dropping the mac80211 feature, which
> hasn't been merged upstream yet, no?
Right.

- Felix