setting a fixed Mac address on a PineCube

[ajellisuk]

Hello

I have got a PineCube running Armbian, and is also using Uboot 2021.07-armbian.

I have found that the mac address keeps changing, and consequently the ip address keeps changing too. This is a real nuiscence.

I have looked for a soltution to this problem, and found some ideas on the One64 forum. Unforutnately the suggestions there didn't work for me on the PineCube.

I have tried adding these to /boot/boot.cmd (no both at once)

Code:

setenv bootargs "${bootargs} ethaddr=7e:50:d1:01:57:68"

setenv bootargs "${bootargs} mac_addr=7e:50:d1:01:57:68"

If I do 

cat /proc/cmdline

I can see that the parameters are passed to the kernel, but are not being acted upon.

I have also tried adding these to /boot/armbianEnv.txt

Code:

mac_addr=7e:50:d1:01:57:68
ethaddr=7e:50:d1:01:57:68

Again not both at once.

Can someone please tell me what I need to do to get the mac address to remain the same on subsequent boots.

Thanks in advance

Andrew