+network addresses made by the program.
+Each time the
+.B \-n
+flag appears, that network name is added to a list of valid networks.
+All other networks are ignored.
+The
+.B \-i
+flag, followed by the name of a network which the host is connected to
+(see: /etc/networks), overrides the default choice of the
+network addresses made by the program.
+Each time the
+.B \-i
+flag appears, that network name is added to a list of networks to ignore.
+All other networks are used by the time daemon.
+The
+.B \-n
+and
+.B \-i
+flags are meaningless if used together.