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greyface- 13 hours ago

This will generate a multicast MAC 50% of the time, which will usually work, but can theoretically cause problems if there's a multicast-aware Ethernet bridge in your path. Ideally, the LSB of the first octet should be fixed to 0 to indicate a unicast address.

https://en.wikipedia.org/wiki/MAC_address#Unicast_vs._multic...