USB Tethering given a every time same Mac address 00:00:00:00:00:00

When I used a USB tethering with Ubuntu 20.04 OS. My device does not given IPAdreess to the Ubuntu device(My PC). And the Mac Address is always 00:00:00:00:00:00.

In windows 10 USB Tethering working. My pc has a IPAddress through USB Tethering, but Mac still remain Same 00:00:00:00:00:00.