Odroid C2 MAC address confusion

[mboehmer]

Armbianmonitor:

http://ix.io/242M

Hi all,

 

preparing an image for our next deployment (10 Odroid C2), I found that somehow the MAC address visible in Uboot doesn't make it into Armbian system.

On the first copied system (I use odroidbackup.pl), in Uboot "Printenv" I get

ethaddr=00:1e:06:36:58:63

Original system gives me:

ethaddr=00:1e:06:34:fa:1a

Both systems report to our DHCP server with the latter MAC, which will lead to troubles when both boards will be in the same network

Any hints how to get the (apparently eFuse stored) MAC into the Armbian system?

 

Thanks in advance, Michael

[mboehmer]

C'mon... noone has any ideas?

Anyone who has some knowledge where the MAC address of C2 boards is injected into the kernel?

[Igor]

Where we don't have proper solution, we use userspace hacks. Which you can also try to use.

[mboehmer]

So there is no way to get the uboot stored MAC into Armbian?

I don't get it then how the root system I used for cloning did get the MAC into it, and where it is stored.

As in the final system setup will be fixed IPs, this is not a showstopper, anyhow it would be great to understand where Armbian does store the MAC (whereever it came from).

Any hints for me?

 

[Igor]

5 minutes ago, mboehmer said:

Any hints for me?

If we would have a better solution, it would already be a part of the system. Perhaps there is one, just I don't know for it.

[mboehmer]

I made some investigations, and maybe this one is the place to proceed?

 

https://patchwork.kernel.org/patch/11062673/

 

It seems to be related to same problem, but on C1.

[mboehmer]

Problem is solved with change to "dev" kernel, there it works.

Change was necessary to get UARTs working (thnx to Martin