$NetBSD: patch-av,v 1.3 2006/04/11 15:08:38 joerg Exp $

--- uip/dropsbr.c.orig	1998-04-23 21:02:00.000000000 +0000
+++ uip/dropsbr.c
@@ -20,6 +20,9 @@ static char ident[] = "@(#)$Id: dropsbr.
 #undef NULLVP
 #include <netinet/in.h>
 #else
+#ifdef ntohl
+#undef ntohl
+#endif
 #define	ntohl(n) (n)
 #endif
 
@@ -33,8 +36,6 @@ static	int	mbx_style = MMDF;
 
 static int	mbx_create(), mbx_chk(), map_open();
 
-extern int  errno;
-
 off_t   lseek ();
 
 /*  */