To stop the NIS+ daemon, whether it is running in normal or NIS-compatibility mode, kill it as you would any other daemon: first find its process ID, then kill it:
rootmaster# ps -e | grep rpc.nisd root 1081 1 61 16:43:33 ? 0:01 rpc.nisd -S 0 root 1087 1004 11 16:44:09 pts/1 0:00 grep rpc.nisd rootmaster# kill 1081 |