+The session method won't deal well if you have multiple open sessions on a
+port, for example if your RADIUS server drops B<stop> records. Suggestions for
+how to deal with this sort of lossage welcome; should we close the session
+when we get a new session on that port? Tag it as invalid somehow? Close it
+one second after it was opened? *sigh* Maybe FS::session shouldn't let you
+create overlapping sessions, at least folks will find out their logging is
+dropping records.
+
+If you think the above refers multiple user logins you need to read the
+manpages again.
+