$NetBSD: patch-aa,v 1.1 2009/07/07 21:20:37 joerg Exp $

--- iftop.c.orig	2009-07-05 17:30:23.000000000 +0200
+++ iftop.c
@@ -528,6 +528,12 @@ void packet_init() {
     else if(dlt == DLT_PPP) {
         packet_handler = handle_ppp_packet;
     }
+#ifdef DLT_PPP_SERIAL
+    else if(dlt == DLT_PPP_SERIAL) {
+        packet_handler = handle_ppp_packet;
+    }
+
+#endif
 /* 
  * SLL support not available in older libpcaps
  */