Setting a MAC on Rock64 U-Boot

[as365n4]

I don't know about u-boot, but you can fix this on OS level fairly easily.

nano /etc/systemd/network/00-default.link

Code:

[Match]
MACAddress= 12:ac:66:34:01:32

[Link]
MACAddress=12:ac:66:02:02:02
NamePolicy=kernel database onboard slot path

That "da:19:c8" was done during Kernel change from 4.19 to 5.1 i believe, as they had to build a new u-boot since the old one wasn't working with the new Kernel.