Actually, Keef, mine didn't insist it was 192 168 etc: I work on 10.0.0. etc and it accepted that and configured itself as ...8 without any intervention from me. The inst. manual does say it tries to be DHCP client; it did... yours was obviously 'avin a mood.
As I said, for the time being I'll use it as a network extension, and see if, later, I can use some bullying tactix on it to make it bend to my will.
But no, Keef, I don't want another one!