--- port.h.ori	2013-06-08 23:50:59.975794488 +0200
+++ port.h	2013-06-08 23:51:31.112464217 +0200
@@ -247,7 +247,7 @@
 #endif
 
 #ifndef _IPADDR_T
-# if defined(__alpha) || defined(__arch64__)
+# if defined(__alpha) || defined(__arch64__) || defined(__x86_64__)
 typedef unsigned int	ipaddr_t;
 # else
 typedef unsigned long	ipaddr_t;