--- zzzz-none-000/linux-2.6.39.4/net/l2tp/Kconfig	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/net/l2tp/Kconfig	2021-11-10 13:38:18.000000000 +0000
@@ -4,6 +4,7 @@
 
 menuconfig L2TP
 	tristate "Layer Two Tunneling Protocol (L2TP)"
+	depends on (IPV6 || IPV6=n)
 	depends on INET
 	---help---
 	  Layer Two Tunneling Protocol
@@ -45,8 +46,8 @@
 	  will be called l2tp_debugfs.
 
 config L2TP_V3
-	bool "L2TPv3 support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && L2TP
+	bool "L2TPv3 support"
+	depends on L2TP
 	help
 	  Layer Two Tunneling Protocol Version 3