I was trying to get my Routers MAC address from Luci. It is incorrectly displayed in Network => Interfaces as 00:00:00:00:00:00 for all but the LAN.
I have been unsuccessful in searching for this. Mac Address gives 173 pages, so I apologize if this is redundant.
I have found this note in github https://github.com/openwrt/packages/issues/812
I am not clear if this is a reported bug.
I ran the commands as discussed in the above link. I can confirm the findings of stangri.
I am running CC 15.05 RC2
RangerZ