--- iris/src/irisnet/corelib/netinterface_unix.cpp-	2012-12-09 15:15:51.763993882 +0000
+++ iris/src/irisnet/corelib/netinterface_unix.cpp	2012-12-09 15:16:09.515147845 +0000
@@ -24,6 +24,8 @@
 
 // gateway detection currently only works on linux
 
+#include <unistd.h>
+
 #include "irisnetplugin.h"
 
 #include <sys/types.h>