Short version: Needed another aimesh node so bought a 68u on eBay for a steal....
Didn't think to check much else, and now realise it's a DSL 68u which isn't compatible with an ethernet backhaul............ Which is the whole reason for buying another node....
Didn't think to check much else, and now realise it's a DSL 68u which isn't compatible with an ethernet backhaul............ Which is the whole reason for buying another node....