$OpenBSD: patch-dnstop_c,v 1.4 2011/01/14 08:23:21 sthen Exp $
--- dnstop.c.orig	Wed Jan 28 20:40:06 2009
+++ dnstop.c	Thu Oct 14 08:23:37 2010
@@ -45,6 +45,7 @@ static const char *Version = "20090128";
 #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 */
