Document daemonisation.

babel.man

@@ -115,8 +115,17 @@ Export routes from the given kernel routing table.
 Specify the name of the configuration file.  The default is
 .BR /etc/babel.conf .
 .TP
-.BI \-C " statement"
-Specify a configuration statement directly on the command line.
+.B \-D
+Daemonise at startup.
+.TP
+.BI \-L " logfile"
+Specify a file to log random ``how do you do?'' messages to.  This
+defaults to standard error if not daemonising, and to
+.B /var/log/babel.log
+otherwise.
+.TP
+.BI \-I " pidfile"
+Specify a file to write our process id to.
 .TP
 .RI "[ " id " ]"
 The router-id of this daemon.  This should normally be an IPv6 or IPv4