I was unable to change the MAC address of the Wi-FI device on a MacBook Air (M1 2020) running macOS Sequoia due to the following error: ifconfig: ioctl (SIOCAIFADDR): Can't assign requested addres.
By running the commands in following sequence I was able to change it successfully:
- Turn WiFi device off
- Turn the WiFi device on again:
networksetup -setairportpower en0 on - Change the MAC:
ifconfig en0 ether <mac-address-here> - Run:
networksetup -detectnewhardware