$NetBSD: patch-an,v 1.1 2006/02/24 20:32:19 joerg Exp $

--- src/flow-header.c.orig	2006-02-24 20:29:49.000000000 +0000
+++ src/flow-header.c
@@ -32,6 +32,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 void usage(void);