--- a/examples/simple-global-routing.cc	Sun Sep 09 23:21:47 2007 -0700
+++ b/examples/simple-global-routing.cc	Sun Sep 09 23:24:31 2007 -0700
@@ -65,6 +65,7 @@
 #include "ns3/ipv4-route.h"
 #include "ns3/point-to-point-topology.h"
 #include "ns3/onoff-application.h"
+#include "ns3/packet-sink.h"
 #include "ns3/global-route-manager.h"
 
 using namespace ns3;
@@ -151,6 +152,17 @@
   ooff->Start (Seconds (1.0));
   ooff->Stop (Seconds (10.0));
 
+  // Create a packet sink to receive these packets
+  // The last argument "true" disables output from the Receive callback
+  Ptr<PacketSink> sink = Create<PacketSink> (
+    n3, 
+    InetSocketAddress (Ipv4Address::GetAny (), 80), 
+    "Udp",
+     true);
+  // Start the sink
+  sink->Start (Seconds (1.0));
+  sink->Stop (Seconds (10.0));
+
   // Create a similar flow from n3 to n1, starting at time 1.1 seconds
   ooff = Create<OnOffApplication> (
     n3, 
@@ -162,6 +174,16 @@
   ooff->Start (Seconds (1.1));
   ooff->Stop (Seconds (10.0));
 
+  // Create a packet sink to receive these packets
+  sink = Create<PacketSink> (
+    n1, 
+    InetSocketAddress (Ipv4Address::GetAny (), 80), 
+    "Udp",
+    true);
+  // Start the sink
+  sink->Start (Seconds (1.1));
+  sink->Stop (Seconds (10.0));
+
   // Configure tracing of all enqueue, dequeue, and NetDevice receive events
   // Trace output will be sent to the simple-global-routing.tr file
   AsciiTrace asciitrace ("simple-global-routing.tr");

--- a/examples/simple-point-to-point.cc	Sun Sep 09 23:21:47 2007 -0700
+++ b/examples/simple-point-to-point.cc	Sun Sep 09 23:24:31 2007 -0700
@@ -64,6 +64,7 @@
 #include "ns3/ipv4-route.h"
 #include "ns3/point-to-point-topology.h"
 #include "ns3/onoff-application.h"
+#include "ns3/packet-sink.h"
 
 using namespace ns3;
 
@@ -153,6 +154,15 @@
   ooff->Start(Seconds(1.0));
   ooff->Stop (Seconds(10.0));
 
+  // Create an optional packet sink to receive these packets
+  Ptr<PacketSink> sink = Create<PacketSink> (
+    n3,
+    InetSocketAddress (Ipv4Address::GetAny (), 80),
+    "Udp");
+  // Start the sink
+  sink->Start (Seconds (1.0));
+  sink->Stop (Seconds (10.0));
+
   // Create a similar flow from n3 to n1, starting at time 1.1 seconds
   ooff = Create<OnOffApplication> (
     n3, 
@@ -164,6 +174,16 @@
   ooff->Start(Seconds(1.1));
   ooff->Stop (Seconds(10.0));
 
+  // Create a packet sink to receive these packets
+  sink = Create<PacketSink> (
+    n1,
+    InetSocketAddress (Ipv4Address::GetAny (), 80),
+    "Udp");
+  // Start the sink
+  sink->Start (Seconds (1.1));
+  sink->Stop (Seconds (10.0));
+  sink->SetQuiet ();  // disable output from the Receive callback
+
   // Here, finish off packet routing configuration
   // This will likely set by some global StaticRouting object in the future
   Ptr<Ipv4> ipv4;