[Macchiato] How to save mac addresses?

[Andrew Elwell]

Hi folks,

I've noticed that I'm getting random mac addresses on boot - how can I
save them in EFI or device tree?

[root at alfred ~]# dmesg | grep mvpp
[    6.364974] mvpp2 MRVL0110:00 eth0: Using random mac address
9e:3d:27:0f:98:34
[    6.409005] mvpp2 MRVL0110:01 eth1: Using random mac address
4a:b3:4e:2a:40:dd
[    6.421132] mvpp2 MRVL0110:01 eth2: Using random mac address
0e:bb:0d:fe:57:63
[    6.451371] mvpp2 MRVL0110:00 enamrvl110i0: renamed from eth0
[    6.542381] mvpp2 MRVL0110:01 enamrvl110i1: renamed from eth1

and again a reboot later
[root at alfred ~]# dmesg | grep mvpp
[    6.467892] mvpp2 MRVL0110:00 eth0: Using random mac address
f2:4e:e7:95:31:43
[    6.519720] mvpp2 MRVL0110:01 eth1: Using random mac address
d6:d8:07:dd:52:0f
[    6.523032] mvpp2 MRVL0110:01 eth2: Using random mac address
66:35:89:b5:60:8d
[    6.532560] mvpp2 MRVL0110:00 enamrvl110i0: renamed from eth0
[    6.602505] mvpp2 MRVL0110:01 enamrvl110i1: renamed from eth2


Given I don't know at a boot which of the interfaces will come up as
enamrvl* or eth* its making writing ifcfg-* files a PITA.


When I've looked at drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c,
it appears that it should be able to get it from firmware or hardware
before falling back to random,

Is there a way to set this in EFI and/or DT somehow so it's at least consistent?

Andrew