Index: /trunk/src/VBox/NetworkServices/NAT/winutils.h
===================================================================
--- /trunk/src/VBox/NetworkServices/NAT/winutils.h	(revision 49855)
+++ /trunk/src/VBox/NetworkServices/NAT/winutils.h	(revision 49856)
@@ -99,12 +99,17 @@
 
 /**
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668(v=vs.85).aspx#WSAEHOSTDOWN
- * Corresponds to WSAEHOSTDOWN (10064) WSAGetLastError()
+ * "Windows Sockets Error Codes" obtained with WSAGetLastError().
+ * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668(v=vs.85).aspx
  */
-#  define EHOSTDOWN WSAEHOSTDOWN
-/**
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668(v=vs.85).aspx#WSAEHOSTUNREACH
- */
-#  define EHOSTUNREAH WSAEHOSTUNREACH
+#  undef  EMSGSIZE
+#  define EMSGSIZE              WSAEMSGSIZE
+#  undef  ENETDOWN
+#  define ENETDOWN              WSAENETDOWN
+#  undef  ENETUNREACH
+#  define ENETUNREACH           WSAENETUNREACH
+#  undef  EHOSTDOWN
+#  define EHOSTDOWN             WSAEHOSTDOWN
+#  undef  EHOSTUNREACH
+#  define EHOSTUNREACH          WSAEHOSTUNREACH
 
 /**