Changing mac address when connected through ethernet through a dock station/adapter?

[camotwen]

I use macos ventura 13.2 (apple silicon), and use a thunderbold dock to connect to a local network through ethernet. The connection appears as "USB 10/100/1000 LAN", everything works fine, "ifconfig" shows it corresponds to interface en7 let's say.

The issue is that I want to spoof my macadress but a command

sudo ifconfig en7 ether _somenewmacadress_

returns

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

All the tools I know to spoof mac addresses like spoof-mac etc use this command to do that. Is there anything I can do to change the mac address I go by in the local ethernet network? Searching the internet it seems this is a common issue with macos since ages but maybe there is something I am not aware of.

 

[bogdanw]

Try macchanger https://github.com/shilch/macchanger/

 

[camotwen]

Try macchanger https://github.com/shilch/macchanger/

This also uses the same ifconfig command, so it fails

 

[bogdanw]

Maybe not all Ethernet adapters support the change. It’s working for an old Apple one.