Disable (?) NM random mac for shared XO wifi - USB0 / Chrome/ Pi Zero

[Carrol Riddle]

All:
With the possibilities narrowed by James Cameron, found something that works repeatedly on my test XO-1.  Must test again on a fresh system to find minimum configuration.  Changes made to correct board id's, udev rules, connection method prepared from scratch, and unmanaged mac entry in /etc/NetworkManager.conf  .

Will post configuration later to close thread (if I can replicate it :)  ) 

Thanks all for help.
Carrol Riddle

> > Now, setting MACAddressPolicy to none has no effect, which
> > suggests the random address is coming from the kernel.
> > 
> > My guess is that the reason why your udev rpi script fails is that it
> > is triggered on more than one udev event, or races with other things
> > for access to the device.  Add more logging and debugging to it.
> > 
> > Reference:
> > 
> > https://www.freedesktop.org/software/systemd/man/systemd.link.html