--- iris/src/irisnet/corelib/netinterface_unix.cpp.orig	2012-01-07 19:46:39.493999646 +0100
+++ iris/src/irisnet/corelib/netinterface_unix.cpp	2012-01-07 19:46:57.251002321 +0100
@@ -33,6 +33,7 @@
 #include <net/route.h>
 #include <netinet/in.h>
 #include <errno.h>
+#include <unistd.h>
 
 // for solaris
 #ifndef SIOCGIFCONF