Re: [Mcast-wifi] "MLDv2 Procedures for Link-Layer Unicast Delivery of Multicast IPv6"
Linus Lüssing <firstname.lastname@example.org> Wed, 09 December 2015 17:03 UTC
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Date: Wed, 9 Dec 2015 18:01:16 +0100
From: Linus =?utf-8?Q?L=C3=BCssing?= <email@example.com>
To: Mark Smith <firstname.lastname@example.org>
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Subject: Re: [Mcast-wifi] "MLDv2 Procedures for Link-Layer Unicast Delivery of Multicast IPv6"
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Hi Mark, Just wanted to drop a note that not that long ago OpenWRT, a Linux distribution for embedded devices (esp. wireless routers), got a multicast-to-unicast feature. It utilizes the Linux bridge and its multicast snooping capabilities. OpenWRT's network manager "netifd" configures everything in a way, that one STA using MLDv1 cannot shadow another STA through report suppression: All traffic will hit the bridge sitting on top of the AP interface by enabling "AP isolation", STA-to-STA communication is reenabled again by the bridge reflecting packets back on the incoming port (the "hairpin mode" of the Linux bridge). All in all it is not really a "beatiful" solution, but at least using the bridge is a simple one. Thanks for your efforts regarding this topic! Something like this is really needed to make multicast streaming over 802.11 possible. Regards, Linus PS: I would be interested in the feedback you got too, for instance to know whether something should be changed/improved in what OpenWRT currently does :). PPS: The multicast-to-unicast patch for the Linux bridge in OpenWRT is not upstream in the vanilla kernel yet. But hopefully it will be proposed to the Linux bridge mailinglist soon(tm).
- [Mcast-wifi] "MLDv2 Procedures for Link-Layer U... Mark Smith
- Re: [Mcast-wifi] "MLDv2 Procedures for Link-Lay... Linus Lüssing