diff -bruN openswan-2.4.7-old/linux/net/ipsec/pfkey_v2.c openswan-2.4.7-new/linux/net/ipsec/pfkey_v2.c
--- openswan-2.4.7-old/linux/net/ipsec/pfkey_v2.c	2006-10-10 22:43:28.000000000 +0200
+++ openswan-2.4.7-new/linux/net/ipsec/pfkey_v2.c	2006-12-15 17:29:02.000000000 +0100
@@ -1503,7 +1503,7 @@
 	
         printk(KERN_INFO "klips_info:pfkey_cleanup: "
 	       "shutting down PF_KEY domain sockets.\n");
-        error |= sock_unregister(PF_KEY);
+        sock_unregister(PF_KEY);
 
 	error |= supported_remove_all(SADB_SATYPE_AH);
 	error |= supported_remove_all(SADB_SATYPE_ESP);