This tutorial explains how to change the MAC address/physical adress of an network interface on MacOS.

Step 1: Make sure your interface is disconnected.

If your network connection is active, you will get the following error:

ifconfig: ioctl (SIOCAIFADDR): Can't assign requested address

Step 2:

Open Terminal and type:

sudo ifconfig en0 ether 12:34:56:78:90:ab

where:

• en0 is the name of the interface
• 12:34:56:78:90:ab is the desired MAC address