diff -Nur openswan-2.4.4/linux/net/ipsec/pfkey_v2.c openswan-2.4.4.patched/linux/net/ipsec/pfkey_v2.c
--- openswan-2.4.4/linux/net/ipsec/pfkey_v2.c	2005-09-14 18:40:45.000000000 +0200
+++ openswan-2.4.4.patched/linux/net/ipsec/pfkey_v2.c	2005-12-25 04:35:57.674968000 +0100
@@ -820,7 +820,9 @@
 		return 0; /* -EINVAL; */
 	}
 
+#ifdef NET_26
 	write_lock_bh(&pfkey_sock_lock);
+#endif
 
 	KLIPS_PRINT(debug_pfkey,
 		    "klips_debug:pfkey_release: "
@@ -851,7 +853,9 @@
 		    "klips_debug:pfkey_release: "
 		    "succeeded.\n");
 
+#ifdef NET_26
 	write_unlock_bh(&pfkey_sock_lock);
+#endif
 
 	return 0;
 }