✅ 02:11:22:33:44:55 (Will succeed because the second digit is 2 )

If the changes still aren't working, consider these points:

If you are trying to change your MAC address to bypass network restrictions (like a MAC filter on a Wi-Fi network you don't administer), you cannot change the remote router's settings. However, if the restriction is on your own home network, you can achieve your goal in a more straightforward way.