diff --git a/src/xpdev/netwrap.h b/src/xpdev/netwrap.h
index c02717aff7c060079a8936fe9bb9a257396ba6cc..0e5e7d830c6091252ad7762c2259dcba496b6c89 100644
--- a/src/xpdev/netwrap.h
+++ b/src/xpdev/netwrap.h
@@ -8,7 +8,7 @@
  * @format.tab-size 4		(Plain Text/Source Code File Header)			*
  * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
  *																			*
- * Copyright 2005 Rob Swindell - http://www.synchro.net/copyright.html		*
+ * Copyright 2008 Rob Swindell - http://www.synchro.net/copyright.html		*
  *																			*
  * This library is free software; you can redistribute it and/or			*
  * modify it under the terms of the GNU Lesser General Public License		*
@@ -41,6 +41,8 @@
 #include <stddef.h>		/* size_t */
 #include "str_list.h"	/* string list functions and types */
 
+#define IPv4_LOCALHOST	0x7f000001U	/* 127.0.0.1 */
+
 #if defined(__cplusplus)
 extern "C" {
 #endif