From c791d851bb907f8c9c15ffbfddeccf57a847d753 Mon Sep 17 00:00:00 2001
From: adamdunkels <adamdunkels>
Date: Mon, 23 Mar 2009 16:19:03 +0000
Subject: [PATCH] Send an announcement packet only if there are more than zero
 announcemnets

---
 core/net/rime/polite-announcement.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/core/net/rime/polite-announcement.c b/core/net/rime/polite-announcement.c
index 0f6dce424..3422531be 100644
--- a/core/net/rime/polite-announcement.c
+++ b/core/net/rime/polite-announcement.c
@@ -33,7 +33,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: polite-announcement.c,v 1.2 2009/03/12 21:58:21 adamdunkels Exp $
+ * $Id: polite-announcement.c,v 1.3 2009/03/23 16:19:03 adamdunkels Exp $
  */
 
 /**
@@ -108,7 +108,10 @@ send_adv(clock_time_t interval)
   PRINTF("%d.%d: sending neighbor advertisement with %d announcements\n",
 	 rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1], adata->num);
 
-  ipolite_send(&c.c, interval, packetbuf_datalen());
+  if(adata->num > 0) {
+    /* Send the packet if it contains more than one announcement. */
+    ipolite_send(&c.c, interval, packetbuf_datalen());
+  }
 }
 /*---------------------------------------------------------------------------*/
 static void