diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 7107bb7..2db31ce 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -421,3 +421,4 @@
 module_exit(esp6_fini);
 
 MODULE_LICENSE("GPL");
+MODULE_ALIAS_XFRM_TYPE(AF_INET6, XFRM_PROTO_ESP);