--- /distros/kernel/linux-2.6.11.2/net/ipv4/Kconfig	2005-03-09 03:12:33.000000000 -0500
+++ swan26/net/ipv4/Kconfig	2005-04-04 18:46:13.000000000 -0400
@@ -351,2 +351,8 @@
 
+config IPSEC_NAT_TRAVERSAL
+	bool "IPSEC NAT-Traversal (KLIPS compatible)"
+	depends on INET
+	---help---
+          Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP.
+
 config IP_TCPDIAG