qstat: cannot connect to server ... (errno=111)

I could pass this error only when commented lines

pbs 15000/tcp
pbs_dis 15001/tcp
pbs_dis 15001/udp
pbs_mom 15002/tcp
pbs_mom 15003/udp
pbs_mom 15003/tcp
pbs_sched 15004/tcp

in ng2:auckland.ac.nz:/etc/services file.
I placed those line reading Vladimir's recommendations.

UPD: after some tests I've found out that it's enough to edit first line in this group. It should be pbs_server 15000/tcp and then pbs utilities can connect to pbs_server. Even if on the box where pbs_server is running this line should like that, otherwise pbs utilities don't see the pbs_server.