diff -Nur openswan-2.4.0.orig/linux/net/ipsec/pfkey_v2.c openswan-2.4.0/linux/net/ipsec/pfkey_v2.c
--- openswan-2.4.0.orig/linux/net/ipsec/pfkey_v2.c	2005-09-06 04:10:03.000000000 +0200
+++ openswan-2.4.0/linux/net/ipsec/pfkey_v2.c	2005-09-21 09:32:49.214628750 +0200
@@ -821,7 +821,9 @@
 		return 0; /* -EINVAL; */
 	}
 
+#ifdef NET_26
 	write_lock_bh(&pfkey_sock_lock);
+#endif
 
 	KLIPS_PRINT(debug_pfkey,
 		    "klips_debug:pfkey_release: "
