IMX8MP ubuntu22.04 fec network card mac address

[meeeeeei]

I use the IMX8MP ubuntu system, the mac address of the fec network card is fixed 6e:ea:1d:e6:5f:40, in fact, the kernel has generated a random mac address, but after entering the system, it has been 6e:ea:1d:e6:5f:40 mac address, not the kernel randomly generated address. Why is that?

BSP:LF6.1.1-1.00

[jimmychan]

The mac address could set it in u-boot.

### The user can set fake MAC address via ethaddr enviroment if the MAC
address is not fused

U-Boot > setenv ethaddr 00:01:02:03:04:05

Please read the linux user's guide for details.

https://www.nxp.com/docs/en/user-guide/IMX_LINUX_USERS_GUIDE.pdf