diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index 0faab633258..d385a786943 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -24,6 +24,17 @@ config XFRM_SUB_POLICY
 
 	  If unsure, say N.
 
+config XFRM_MIGRATE
+	bool "Transformation migrate database (EXPERIMENTAL)"
+	depends on XFRM && EXPERIMENTAL
+	---help---
+	  A feature to update locator(s) of a given IPsec security
+	  association dynamically.  This feature is required, for
+	  instance, in a Mobile IPv6 environment with IPsec configuration
+	  where mobile nodes change their attachment point to the Internet.
+
+	  If unsure, say N.
+
 config NET_KEY
 	tristate "PF_KEY sockets"
 	select XFRM