I am on 2Degrees 4G wireless internet and am using the supplied TP-Link MX515v modem and it looks like my printer which is LAN connected, and has been for years, is not being seen by the router and hence the rest of the network. It was happily working with a number of different modems over the years, just not this one. It was operating on an address in the 169 range. I seem to have done some kind of resest so it's sitting on 0.0.0.0 which is another issue