add l2tp

src/etc/services

@@ -1,4 +1,4 @@
-#	$OpenBSD: services,v 1.72 2009/08/12 20:26:05 deraadt Exp $
+#	$OpenBSD: services,v 1.73 2010/01/17 05:50:06 dlg Exp $
 #
 # Network services, Internet style
 #
@@ -215,6 +215,7 @@ ingreslock	1524/udp
 prospero-np	1525/tcp			# Prospero non-privileged
 prospero-np	1525/udp
 sa-msg-port	1646/udp
+l2tp		1701/udp			# Layer 2 Tunneling Protocol
 pptp		1723/tcp			# Point-to-Point Tunneling Protocol
 pptp		1723/udp			# Point-to-Point Tunneling Protocol
 radius		1812/udp			# radius authentication