doc update

src/ocserv-args.def

@@ -116,7 +116,8 @@ dpd = 240
 # Dead peer detection for mobile clients. The needs to
 # be much higher to prevent such clients being awaken too 
 # often by the DPD messages, and save battery.
-# (clients that send the X-AnyConnect-Identifier-DeviceType)
+# The mobile clients are distinguished from the header
+# 'X-AnyConnect-Identifier-DeviceType'.
 mobile-dpd = 1800
 
 # MTU discovery (DPD must be enabled)
@@ -215,8 +216,8 @@ rekey-time = 172800
 #       option.
 rekey-method = ssl
 
-# Script to call when a client connects and obtains an IP
-# Parameters are passed on the environment.
+# Script to call when a client connects and obtains an IP.
+# The following parameters are passed on the environment.
 # REASON, USERNAME, GROUPNAME, HOSTNAME (the hostname selected by client), 
 # DEVICE, IP_REAL (the real IP of the client), IP_LOCAL (the local IP
 # in the P-t-P connection), IP_REMOTE (the VPN IP of the client),
@@ -225,9 +226,11 @@ rekey-method = ssl
 #disconnect-script = /usr/bin/myscript
 
 # UTMP
+# Register the connected clients to utmp. This will allow viewing
+# the connected clients using the command 'who'.
 use-utmp = true
 
-# D-BUS usage. If disabled occtl tool cannot be used. If enabled
+# D-BUS usage. If disabled the occtl tool cannot be used. If enabled
 # then ocserv must have access to register org.infradead.ocserv
 # D-BUS service. See doc/dbus/org.infradead.ocserv.conf
 use-dbus = true
@@ -290,6 +293,8 @@ dns = 192.168.1.2
 
 # Prior to leasing any IP from the pool ping it to verify that
 # it is not in use by another (unrelated to this server) host.
+# Only set to true, if there can be occupied addresses in the
+# IP range for leases.
 ping-leases = false
 
 # Unset to assign the default MTU of the device