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

[Ralf Wenk]

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?

Ralf