Hi,

Thanks to Takamichi, Erik Osheim and Ben I found out what was required for
nfsd in /etc/rc.conf:

#NFS
rpcbind=YES
mountd=YES
# /etc/rc.d/nfslocking => statd + lockd
statd=YES
lockd=YES
# /etc/rc.d/nfsd => nfs_server
nfs_server=YES


to start the service:

/etc/rc.d/rpcbind    start
/etc/rc.d/mountd     start
/etc/rc.d/nfslocking start
/etc/rc.d/nfsd       start


Perhaps this could be added somewhere in
http://www.netbsd.org/Documentation/network/ or in "The NetBSD Guide"

Max