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I have to imagine this is related to the release of Matter, the smart home communication standard. Cutting off multicast cuts off a standard way existing network connected home automation devices work, forcing users to Matter and to ultimately buy into a new ecosystem.

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It will also seriously harm their TV/AirPlay competitor Chromecast, right? I have to imagine that every app with a Chromecast integration is using multicast to discover devices, but I could be wrong.

Thank you. That sounds right. Like that you get an inventory of apps which you later can nudge/force into Matter.

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