<P>
</LI>
+<LI><B>pid_file</B> (string)<BR>
+If this is set, the process id will be written to this file. The filename must
+contain an absolute path.
+<P>
+</LI>
+
<LI><B>l2tp_secret</B> (string)<BR>
This sets the string that l2tpns will use for authenticating tunnel request.
This must be the same as the LAC, or authentication will fail. This will