@djwujek yes that seems strange, disconnect the router from the network, and do a factory reset of the router, hold down the reset button for 20 seconds, log in to the router locally to change the IP...

@ColeT It sounds like a plan to update the firmware first :-) there have been many fixes.

@djwujek hmm, sounds strange, normally there shouldn't be any problem changing the IP, did you get a ping from the console to the controller to? then there's nothing wrong with communication.

@djwujek are you using the router as a dhcp server? are you getting an ip from the router? can you ping your router? Try from your PC and from the SSH console on the controller.

@djwujek Do you have any switches and access points in your network? Are they working properly?

@djwujek I don't know anything about Docker but I know it has a firewall, have you checked that it's ok?