Random mac address

#1

Hi,
I have a radxa taco and a CM4.
I have installed pi os lite with an io board and, when i connect this io board to my network, it shows up with the same mac address each time i boot it. However, when i connect the cm4 to the taco, the mac address changes after every boot, and i can’t setup a fixed ip address with my router.
I haven’t found anything on this matter.
how can i make the mac address static ?
thanks

#2

I think this is an easy question. you can set your mac address in ssh

  1. use ip link to show your device name like wlan1.
  2. shutdown port: sudo ip link set dev wlan1 down
  3. set address : sudo ip link set dev wlan1 address 12:34:56:78:9a:bc
  4. up port: sudo ip link set dev wlan1 up