rpi3 - changing MAC address of ue0 between GENERIC and GENERIC-NODEBUG kernels

[Hans Petter Selasky]

On 10/24/17 09:33, Ralf Wenk wrote:
> Hello,
> 
> as I noticed accidental, the MAC address of the ue0 interface on my
> rpi 3 is changing between a kernel build with KERNCONF=GENERIC and
> KERNCONF=GENERIC-NODEBUG from the same revision.
> 
> It also changes between GENERIC kernels based on different revisions.
> 
> It looks like the MAC address is stable for each kernel, because when
> I boot a kernel from an older revision with a known ue0 MAC address
> this older kernel uses the old known MAC address.
> 
> I do crosscompiling the rpi3 world and kernel(s) on a amd64 FreeBSD
> 12.0-Current.
> 
> The firmware in the FAT partition is not changed between the kernels.
> 
> As I do not see a common pattern in the MAC addresses, I think they are
> more or less random memory bits. Examples:
> d2:8f:50:a0:71:7a GENERIC r324918
> de:2a:39:1b:63:1f GENERIC-NODEBUG r324918
> 7e:45:9d:dc:5b:72 GENERIC r324694
> 
> $ uname -a
> FreeBSD rpi3-b 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r324918: Mon Oct 23
> 21:46:36 CEST 2017     root at home:/usr/obj/arm64.aarch64/usr/src/sys/GENERIC-NOD
> EBUG  arm64
> $
> 
> Is anybody experiencing the same behavior?
> 

Hi,

I believe this topic has been discussed before. Try searching for this 
thread "How to change MAC address on RPI-B?" on this list first.

--HPS