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by fmajid 823 days ago
Apple has this "feature" called Bonjour Sleep Proxy whereby which certain stationary devices like an Airport AP, HomePod or AppleTV will impersonate your Mac when it goes to sleep, so f you want to access a service on it, e.g. stream music from it, the other device acts as a proxy, sends a WoL packet to the Mac and passes the MAC back to it. Needless to say, this often plays havoc with poorly coded routers or switches with wonky ARP or bridge MAC to port lookup tables.

https://en.wikipedia.org/wiki/Bonjour_Sleep_Proxy