diff -up net-tools-1.60/lib/ec_hw.c.old net-tools-1.60/lib/ec_hw.c
--- net-tools-1.60/lib/ec_hw.c.old 1999-11-20 22:02:53.000000000 +0100
+++ net-tools-1.60/lib/ec_hw.c 2008-02-25 09:04:00.000000000 +0100
@@ -18,6 +18,7 @@
#include <net/if_arp.h>
#include "net-support.h"
+#define NULL ((void *) 0)
struct hwtype ec_hwtype =
{