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by agf 3372 days ago
I would assume because MAC-based whitelisting is a commonly used WiFi access control mechanism?
2 comments

Also possibly because, if it is associated with a wifi network, then it's already sending packets with its MAC address, so there's not much point in randomizing some of the packets.
In addition to those who whitelist based on MAC address, some networks also assign "static IPs" via DHCP based on the MAC address.