Change MAC address in Mac Sonoma

Sometimes you want to change – aka spoof your MAC address on your Mac, for example for testing.

I received the following error at first:

ifconfig: ioctl (SIOCAIFADDR): Can't assign requested addres.

I had to do the following (in this sequence):

1. Turn WiFi off
2. Run the following commands (the first one tuns wifi back on again)
   networksetup -setairportpower en0 on
   ifconfig en0 ether <new-mac-here>
   networksetup -detectnewhardware

Done.