(Thanks for your time shep.)
Put nbsd.km.net into /etc/myname.
Tried to bring it up with /etc/network start
Code:
Starting network.
Hostname: nbsd.km.net
IPv6 mode: host
Configuring network interfaces: rum0.
Adding interface aliases:.
Waiting for DAD completion for statically configured addresses...
still no joy.
edit: Rebooted just in case it made any difference - but still no network with/in ifconfig
edit2: Will check back in the morning.