[LEDE-DEV] ar71xx: Non-Unique MAC addresses for GL-iNet GL-AR750

[Dongming Han]

Hi Sven,

We actually allocate two MAC per GL-AR750. In manufacturing procedure, every
scan of device label consumes two MAC in database.

Is there any pitfall not having unique MAC per interface on some use case?
Many thanks for your advice.

--
Best Regards,
Dongming Han

> I've just noticed that the mac addresses for this device aren't unique (on the 
> device itself). Neither in the original firmware or in the OpenWrt/LEDE 
> support.
> 
> 2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
>     link/ether e4:95:6e:44:09:58 brd ff:ff:ff:ff:ff:ff
> 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
>     link/ether e4:95:6e:44:09:58 brd ff:ff:ff:ff:ff:ff
> 3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN qlen 1000
>     link/ether e4:95:6e:44:09:59 brd ff:ff:ff:ff:ff:ff
> 4: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
>     link/ether e4:95:6e:44:09:59 brd ff:ff:ff:ff:ff:ff
> 
> The address for eth0 is in the art partition (offset 0x0) and the rest are 
> calculated manually based on that. Now it would be interesting to know how 
> many addresses were actually allocated per device for the GL-AR750. The 
> devices which I've received seem to suggest that at max 4 mac addresses are 
> assigned per device (but maybe also only 2) and I can only hope that at least 
> two were allocated.
> 
> Kind regards,
>	Sven