+.B master_detach
+If multilink is enabled and this pppd process is the multilink bundle
+master, and the link controlled by this pppd process terminates, this
+pppd process continues to run in order to maintain the bundle. If the
+\fBmaster_detach\fR option has been given, pppd will detach from its
+controlling terminal in this situation, even if the \fBnodetach\fR
+option has been given.
+.TP