$OpenBSD: patch-dnstop_c,v 1.8 2014/09/16 10:32:39 sthen Exp $
--- dnstop.c.orig	Mon Sep 15 18:54:51 2014
+++ dnstop.c	Tue Sep 16 11:23:38 2014
@@ -46,6 +46,7 @@ static const char *Version = "20140915";
 #include <netdb.h>
 
 #ifdef HAVE_NET_IF_PPP_H
+#include <net/ppp_defs.h>
 #include <net/if_ppp.h>
 #define PPP_ADDRESS_VAL       0xff	/* The address byte value */
 #define PPP_CONTROL_VAL       0x03	/* The control byte value */
