bumping this… @chrisk @oweno @thetechnobear if any of you can help 
edit: sorry i am on os 4.0 !!!
this thread was helpful to allow write permission to netconfig: Set system/root as read-write by default
updated the last two lines of the netconfig file in /etc as below, but still unsuccessful for wired connection:
@KristofferLislegaard - any ideas?