$NetBSD: patch-ac,v 1.3 1998/11/04 17:25:12 mycroft Exp $

--- arpwatch.h.orig	Mon Feb  9 19:35:15 1998
+++ arpwatch.h	Wed Nov  4 12:15:33 1998
@@ -1,7 +1,9 @@
 /* @(#) $Header: /cvsroot/pkgsrc/net/arpwatch/patches/patch-ac,v 1.3 1998/11/04 17:25:12 mycroft 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)