--- a/src/applications/model/bulk-send-application.cc	
+++ a/src/applications/model/bulk-send-application.cc	
@@ -118,6 +118,7 @@ void BulkSendApplication::StartApplication (void) // Called at time specified by
   if (!m_socket)
     {
       m_socket = Socket::CreateSocket (GetNode (), m_tid);
+      m_socketCreated (m_socket);
 
       // Fatal error if socket type is not NS3_SOCK_STREAM or NS3_SOCK_SEQPACKET
       if (m_socket->GetSocketType () != Socket::NS3_SOCK_STREAM &&
--- a/src/applications/model/onoff-application.cc	
+++ a/src/applications/model/onoff-application.cc	
@@ -151,6 +151,8 @@ void OnOffApplication::StartApplication () // Called at time specified by Start
   if (!m_socket)
     {
       m_socket = Socket::CreateSocket (GetNode (), m_tid);
+      m_socketCreated (m_socket);
+
       if (Inet6SocketAddress::IsMatchingType (m_peer))
         {
           m_socket->Bind6 ();
--- a/src/applications/model/packet-sink.cc	
+++ a/src/applications/model/packet-sink.cc	
@@ -114,6 +114,7 @@ void PacketSink::StartApplication ()    // Called at time specified by Start
   if (!m_socket)
     {
       m_socket = Socket::CreateSocket (GetNode (), m_tid);
+      m_socketCreated (m_socket);
       m_socket->Bind (m_local);
       m_socket->Listen ();
       m_socket->ShutdownSend ();
--- a/src/applications/model/udp-client.cc	
+++ a/src/applications/model/udp-client.cc	
@@ -117,6 +117,7 @@ UdpClient::StartApplication (void)
     {
       TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
       m_socket = Socket::CreateSocket (GetNode (), tid);
+      m_socketCreated (m_socket);
       if (Ipv4Address::IsMatchingType(m_peerAddress) == true)
         {
           m_socket->Bind ();
--- a/src/applications/model/udp-echo-client.cc	
+++ a/src/applications/model/udp-echo-client.cc	
@@ -125,6 +125,7 @@ UdpEchoClient::StartApplication (void)
     {
       TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
       m_socket = Socket::CreateSocket (GetNode (), tid);
+      m_socketCreated (m_socket);
       if (Ipv4Address::IsMatchingType(m_peerAddress) == true)
         {
           m_socket->Bind();
--- a/src/applications/model/udp-echo-server.cc	
+++ a/src/applications/model/udp-echo-server.cc	
@@ -81,6 +81,7 @@ UdpEchoServer::StartApplication (void)
     {
       TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
       m_socket = Socket::CreateSocket (GetNode (), tid);
+      m_socketCreated (m_socket);
       InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), m_port);
       m_socket->Bind (local);
       if (addressUtils::IsMulticast (m_local))
--- a/src/applications/model/udp-server.cc	
+++ a/src/applications/model/udp-server.cc	
@@ -119,6 +119,7 @@ UdpServer::StartApplication (void)
     {
       TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
       m_socket = Socket::CreateSocket (GetNode (), tid);
+      m_socketCreated (m_socket);
       InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (),
                                                    m_port);
       m_socket->Bind (local);
--- a/src/applications/model/udp-trace-client.cc	
+++ a/src/applications/model/udp-trace-client.cc	
@@ -240,6 +240,7 @@ UdpTraceClient::StartApplication (void)
     {
       TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
       m_socket = Socket::CreateSocket (GetNode (), tid);
+      m_socketCreated (m_socket);
       if (Ipv4Address::IsMatchingType(m_peerAddress) == true)
         {
           m_socket->Bind ();