Xvnc startup problem

[steve%prd.co.uk@localhost (Steve Blinkhorn)]

II am in the process of configuring a number of amd64 machines with
NetBSD-6.1.4, including Xvnc/vncserver.

The software starts, and appears to be running, clients can connect
and log in, but nothing appears on the remote screen.   The first line
of the log file says:

Getting interface configuration (4): Device not configured

which I imagine is the source oof the problem.   Can someone enlighten
me please?

-- 
Steve Blinkhorn <steve%prd.co.uk@localhost>