Re: 13.1R problems on Pi3

On Mon, Jul 04, 2022 at 01:29:59PM -0700, Mark Millard wrote:
> [This ends with a possible config.txt way to control the
> default Ether MAC address used, independent of which OS
> happens to be running. Possibly better than using the
> only-FreeBSD technique.]
> 
> 
> Did you get the two RPi3*'s in the same purchase? Ending up with
> 2 that both happen to have b8:27:eb:71:46:4e seems odd unless
> possibly the means of setting the values at the factory was
> not varying the values like it should in some production lot (or
> over some range of lots). Independent purchases at different
> times would make it seem even odder.
> 
Oddness won this round. They were bought in 2016 and 2018

> 
> 
> I've found references to an undocumented control in config.txt :
> 
> force_mac_address=??:??:??:??:??:??
> 
> See, for example, https://forums.raspberrypi.com/viewtopic.php?t=327562
> 
> Apparently, force_mac_address controls what value shows up in
> the device tree for what the ethernet0 alias points to in the
> device tree.
> 
> Note that having a odd .dtb file could lead to force_mac_address
> not working. (The RPi* firmware reads the file and then makes
> a device tree with some modifications applied.)
> 

With the files on the 13.1R image force_mac_address seems to work.

Thank you very much!

bob prohaska