Change MAC address macOS 12 Monterey

change-mac-address-sequoia.md

Change MAC address in macOS Sequoia

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:

1. Turn WiFi device off
2. Turn the WiFi device on again: networksetup -setairportpower en0 on
3. Change the MAC: ifconfig en0 ether <mac-address-here>
4. Run: networksetup -detectnewhardware

Following has been tested working on M4 macbook with macOS sequoia:

First, disassociate from the wifi AP you were connected to.

Run ifconfig to change the MAC:

sudo ifconfig en0 ether <your-desired-mac>

the command should run w/o error.

You can now see the newly set MAC address in:

sudo ifconfig | less # search en0 to quickly locate the interface 

Typically, the WiFi interface is en0. If not, you can get the correct interface when connected to an AP, during which ifconfig shows ip address that the desired interface is using, which is typically prefixed with 192.... With this, you can find the interface accordingly.

this gives me the same permission denied error as stated earlier in the thread...

this gives me the same permission denied error as stated earlier in the thread...

@limitay Considering you didn't use quote, are you trying my approach? If yes, do you have the WiFI switch disabled? The switch shouldn't be disabled, simply disassociate the AP you were connected to.