[Solved] PPPoE issue
This post is deleted!
Looks like the GPON gateway had locked on to the previous devices hardware address. After power-cycling it the latest version connected without issue. (Piece of junk unnamed cheap manufacturer). May be good to get some output added as to why the process is terminated, to assist others - if there is anything useful that can be logged - just an idea. Very happy now PPPoE is running as it should! :)
Please mark as solved and close thanks.