diff -r eb7335c2423c src/aodv/model/aodv-routing-protocol.cc
--- a/src/aodv/model/aodv-routing-protocol.cc	Sun Apr 14 21:23:56 2013 -0700
+++ b/src/aodv/model/aodv-routing-protocol.cc	Fri Apr 19 06:57:26 2013 -0700
@@ -135,7 +135,7 @@
   MaxQueueTime (Seconds (30)),
   DestinationOnly (false),
   GratuitousReply (true),
-  EnableHello (true),
+  EnableHello (false),
   m_routingTable (DeletePeriod),
   m_queue (MaxQueueLen, MaxQueueTime),
   m_requestId (0),
@@ -246,7 +246,7 @@
                                         &RoutingProtocol::GetDesinationOnlyFlag),
                    MakeBooleanChecker ())
     .AddAttribute ("EnableHello", "Indicates whether a hello messages enable.",
-                   BooleanValue (true),
+                   BooleanValue (false),
                    MakeBooleanAccessor (&RoutingProtocol::SetHelloEnable,
                                         &RoutingProtocol::GetHelloEnable),
                    MakeBooleanChecker ())