mac-address vs. local-mac-address

[Benjamin Herrenschmidt]

> Without a firmware device tree, there's no way to update the device tree and 
> have that new tree retained over a reboot.

I don't think it was ever question to update it over reboot...
mac-address is a runtime property that is lost at reboot, at least
that's my understanding of the OF behaviour. That's where your confusion
is.

Ben.