--- /dev/null
+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;
+ }