--- data.h.orig	Mon Oct  6 16:38:37 2003
+++ data.h	Mon Oct  6 16:38:49 2003
@@ -3,6 +3,7 @@
 #define	__DATA__
 
 #include <search.h>
+#include <unistd.h>
 
 #include <sys/socket.h>
 #include <netinet/in.h>