+# NAS-Identifier
+#
+# If supplied, this option will cause the client to send the given string
+# as the contents of the NAS-Identifier attribute in RADIUS requests. No
+# NAS-IP-Address attribute will be sent in this case.
+#
+# The default behavior is to send a NAS-IP-Address option and not send
+# a NAS-Identifier. The value of the NAS-IP-Address option is chosen
+# by resolving the system hostname.
+
+# nas_identifier MyUniqueNASName
+