I had a problem with nfs-utils in that the .info says it requires filesystems-KERNEL which is not in the .dep list and also mentions ipv6-KERNEL which does not seem to exist at all.
Manually loading filesystems-KERNEL allows me to try to start the server
The startup script /usr/local/etc/init.d/nfs-server does not start all of nfs
It dumps a bunch of errors:
rpc.mountd: svc_tli_create could not open connection for udp6
rpc.mountd: svc_tli_create could not open connection for tcp6
rpc.mountd: svc_tli_create could not open connection for udp6
rpc.mountd: svc_tli_create could not open connection for tcp6
rpc.mountd: svc_tli_create could not open connection for udp6
rpc.mountd: svc_tli_create could not open connection for tcp6
nfs-server utilities are started.
But does not work, after manually running /usr/local/sbin/rpc.nfsd it appears to work and I can mount the drives on another machine