$NetBSD: patch-ac,v 1.4 1999/11/19 12:32:27 agc Exp $

--- arpwatch.h.orig	Fri Nov 19 12:22:02 1999
+++ arpwatch.h	Fri Nov 19 12:22:02 1999
@@ -1,7 +1,9 @@
 /* @(#) Header: arpwatch.h,v 1.28 98/02/09 16:35:15 leres Exp  (LBL) */
 
 #define ARPFILE "arp.dat"
+#ifndef ETHERCODES
 #define ETHERCODES "ethercodes.dat"
+#endif
 #define CHECKPOINT (15*60)		/* Checkpoint time in seconds */
 
 #define MEMCMP(a, b, n) memcmp((char *)a, (char *)b, n)