diff --git a/apps/ndn-app.cpp b/apps/ndn-app.cpp
index a1c9e80..0472550 100644
--- a/apps/ndn-app.cpp
+++ b/apps/ndn-app.cpp
@@ -23,7 +23,8 @@
 #include "ns3/packet.h"
 
 #include "model/ndn-l3-protocol.hpp"
-#include "model/ndn-app-face.hpp"
+#include "model/ndn-app-link-service.hpp"
+#include "model/null-transport.hpp"
 
 NS_LOG_COMPONENT_DEFINE("ndn.App");
 
@@ -115,6 +116,15 @@
   m_receivedDatas(data, this, m_face);
 }
 
+void
+App::OnNack(shared_ptr<const lp::Nack> nack)
+{
+  NS_LOG_FUNCTION(this << nack);
+
+  // @TODO Implement
+  // m_receivedDatas(data, this, m_face);
+}
+
 // Application Methods
 void
 App::StartApplication() // Called at time specified by Start
@@ -128,7 +138,13 @@
                 "Ndn stack should be installed on the node " << GetNode());
 
   // step 1. Create a face
-  m_face = std::make_shared<AppFace>(this);
+  auto appLink = make_unique<AppLinkService>(this);
+  auto transport = make_unique<NullTransport>("appFace://", "appFace://",
+                                              ::ndn::nfd::FACE_SCOPE_LOCAL);
+  // @TODO Consider making AppTransport instead
+  m_face = std::make_shared<Face>(std::move(appLink), std::move(transport));
+  m_appLink = static_cast<AppLinkService*>(m_face->getLinkService());
+  m_face->setMetric(1);
 
   // step 2. Add face to the Ndn stack
   GetNode()->GetObject<L3Protocol>()->addFace(m_face);
diff --git a/apps/ndn-app.hpp b/apps/ndn-app.hpp
index 2d84134..c5b3ae7 100644
--- a/apps/ndn-app.hpp
+++ b/apps/ndn-app.hpp
@@ -21,7 +21,8 @@
 #define NDN_APP_H
 
 #include "ns3/ndnSIM/model/ndn-common.hpp"
-#include "ns3/ndnSIM/model/ndn-app-face.hpp"
+#include "ns3/ndnSIM/model/ndn-app-link-service.hpp"
+#include "ns3/ndnSIM/NFD/daemon/face/face.hpp"
 
 #include "ns3/application.h"
 #include "ns3/ptr.h"
@@ -63,26 +64,26 @@
 
   /**
    * @brief Method that will be called every time new Interest arrives
-   * @param interest Interest header
-   * @param packet   "Payload" of the interests packet. The actual payload should be zero, but
-   * packet itself
-   *                 may be useful to get packet tags
    */
   virtual void
   OnInterest(shared_ptr<const Interest> interest);
 
   /**
    * @brief Method that will be called every time new Data arrives
-   * @param contentObject Data header
-   * @param payload payload (potentially virtual) of the Data packet (may include packet tags of
-   * original packet)
    */
   virtual void
   OnData(shared_ptr<const Data> data);
 
+   /**
+   * @brief Method that will be called every time new Nack arrives
+   */
+  virtual void
+  OnNack(shared_ptr<const lp::Nack> nack);
+
 public:
   typedef void (*InterestTraceCallback)(shared_ptr<const Interest>, Ptr<App>, shared_ptr<Face>);
   typedef void (*DataTraceCallback)(shared_ptr<const Data>, Ptr<App>, shared_ptr<Face>);
+  // @TODO add NACK
 
 protected:
   virtual void
@@ -100,7 +101,9 @@
 
 protected:
   bool m_active; ///< @brief Flag to indicate that application is active (set by StartApplication and StopApplication)
-  shared_ptr<AppFace> m_face; ///< @brief automatically created application face through which application communicates
+  shared_ptr<Face> m_face;
+  AppLinkService* m_appLink;
+
   uint32_t m_appId;
 
   TracedCallback<shared_ptr<const Interest>, Ptr<App>, shared_ptr<Face>>
@@ -109,11 +112,15 @@
   TracedCallback<shared_ptr<const Data>, Ptr<App>, shared_ptr<Face>>
     m_receivedDatas; ///< @brief App-level trace of received Data
 
+  // @TODO add NACK
+
   TracedCallback<shared_ptr<const Interest>, Ptr<App>, shared_ptr<Face>>
     m_transmittedInterests; ///< @brief App-level trace of transmitted Interests
 
   TracedCallback<shared_ptr<const Data>, Ptr<App>, shared_ptr<Face>>
     m_transmittedDatas; ///< @brief App-level trace of transmitted Data
+
+  // @TODO add NACK
 };
 
 } // namespace ndn
diff --git a/model/ndn-app-face.cpp b/model/ndn-app-link-service.cpp
similarity index 67%
rename from model/ndn-app-face.cpp
rename to model/ndn-app-link-service.cpp
index 61c3c21..6b89b42 100644
--- a/model/ndn-app-face.cpp
+++ b/model/ndn-app-link-service.cpp
@@ -17,7 +17,7 @@
  * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  **/
 
-#include "ndn-app-face.hpp"
+#include "ndn-app-link-service.hpp"
 
 #include "ns3/log.h"
 #include "ns3/packet.h"
@@ -27,14 +27,13 @@
 
 #include "apps/ndn-app.hpp"
 
-NS_LOG_COMPONENT_DEFINE("ndn.AppFace");
+NS_LOG_COMPONENT_DEFINE("ndn.AppLinkService");
 
 namespace ns3 {
 namespace ndn {
 
-AppFace::AppFace(Ptr<App> app)
-  : LocalFace(FaceUri("appFace://"), FaceUri("appFace://"))
-  , m_node(app->GetNode())
+AppLinkService::AppLinkService(Ptr<App> app)
+  : m_node(app->GetNode())
   , m_app(app)
 {
   NS_LOG_FUNCTION(this << app);
@@ -42,49 +41,56 @@
   NS_ASSERT(m_app != 0);
 }
 
-AppFace::~AppFace()
+AppLinkService::~AppLinkService()
 {
   NS_LOG_FUNCTION_NOARGS();
 }
 
 void
-AppFace::close()
-{
-  this->fail("Close connection");
-}
-
-void
-AppFace::sendInterest(const Interest& interest)
+AppLinkService::doSendInterest(const Interest& interest)
 {
   NS_LOG_FUNCTION(this << &interest);
 
-  this->emitSignal(onSendInterest, interest);
-
   // to decouple callbacks
   Simulator::ScheduleNow(&App::OnInterest, m_app, interest.shared_from_this());
 }
 
 void
-AppFace::sendData(const Data& data)
+AppLinkService::doSendData(const Data& data)
 {
   NS_LOG_FUNCTION(this << &data);
 
-  this->emitSignal(onSendData, data);
-
   // to decouple callbacks
   Simulator::ScheduleNow(&App::OnData, m_app, data.shared_from_this());
 }
 
 void
-AppFace::onReceiveInterest(const Interest& interest)
+AppLinkService::doSendNack(const lp::Nack& nack)
 {
-  this->emitSignal(onReceiveInterest, interest);
+  NS_LOG_FUNCTION(this << &nack);
+
+  // to decouple callbacks
+  // Simulator::ScheduleNow(&App::OnNack, m_app, nack.shared_from_this());
+}
+
+//
+
+void
+AppLinkService::onReceiveInterest(const Interest& interest)
+{
+  this->receiveInterest(interest);
 }
 
 void
-AppFace::onReceiveData(const Data& data)
+AppLinkService::onReceiveData(const Data& data)
 {
-  this->emitSignal(onReceiveData, data);
+  this->receiveData(data);
+}
+
+void
+AppLinkService::onReceiveNack(const lp::Nack& nack)
+{
+  this->receiveNack(nack);
 }
 
 } // namespace ndn
diff --git a/model/ndn-app-face.hpp b/model/ndn-app-link-service.hpp
similarity index 62%
rename from model/ndn-app-face.hpp
rename to model/ndn-app-link-service.hpp
index ab3de90..798ac1a 100644
--- a/model/ndn-app-face.hpp
+++ b/model/ndn-app-link-service.hpp
@@ -17,12 +17,11 @@
  * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  **/
 
-#ifndef NDN_APP_FACE_H
-#define NDN_APP_FACE_H
+#ifndef NDN_APP_LINK_SERVICE_HPP
+#define NDN_APP_LINK_SERVICE_HPP
 
 #include "ns3/ndnSIM/model/ndn-common.hpp"
-#include "ns3/ndnSIM/NFD/daemon/face/local-face.hpp"
-#include "ns3/ndnSIM/model/ndn-face.hpp"
+#include "ns3/ndnSIM/NFD/daemon/face/link-service.hpp"
 
 namespace ns3 {
 
@@ -35,50 +34,46 @@
 
 /**
  * \ingroup ndn-face
- * \brief Implementation of application Ndn face
+ * \brief Implementation of LinkService for ndnSIM application
  *
- * This class defines basic functionality of Ndn face. Face is core
- * component responsible for actual delivery of data packet to and
- * from Ndn stack
- *
- * \see AppFace, NdnNetDeviceFace
+ * \see NetDeviceLinkService
  */
-class AppFace : public nfd::LocalFace {
+class AppLinkService : public nfd::face::LinkService
+{
 public:
   /**
    * \brief Default constructor
    */
-  AppFace(Ptr<App> app);
+  AppLinkService(Ptr<App> app);
 
-  virtual ~AppFace();
+  virtual ~AppLinkService();
 
-public: // from nfd::Face
-  /**
-   * @brief Send Interest towards application
-   */
-  virtual void
-  sendInterest(const Interest& interest);
-
-  /**
-   * @brief Send Data towards application
-   */
-  virtual void
-  sendData(const Data& data);
-
-  /**
-   * @brief Send Interest towards NFD
-   */
+public:
   void
   onReceiveInterest(const Interest& interest);
 
-  /**
-   * @brief Send Data towards NFD
-   */
   void
   onReceiveData(const Data& data);
 
+  void
+  onReceiveNack(const lp::Nack& nack);
+
+private:
   virtual void
-  close();
+  doSendInterest(const Interest& interest) override;
+
+  virtual void
+  doSendData(const Data& data) override;
+
+  virtual void
+  doSendNack(const lp::Nack& nack) override;
+
+  virtual void
+  doReceivePacket(nfd::face::Transport::Packet&& packet) override
+  {
+    // does nothing (all operations for now handled by LinkService)
+    BOOST_ASSERT(false);
+  }
 
 private:
   Ptr<Node> m_node;
@@ -88,4 +83,4 @@
 } // namespace ndn
 } // namespace ns3
 
-#endif // NDN_APP_FACE_H
+#endif // NDN_APP_LINK_SERVICE_HPP
diff --git a/utils/tracers/ndn-l3-tracer.hpp b/utils/tracers/ndn-l3-tracer.hpp
index a938113..ed8e35b 100644
--- a/utils/tracers/ndn-l3-tracer.hpp
+++ b/utils/tracers/ndn-l3-tracer.hpp
@@ -21,7 +21,6 @@
 #define NDN_L3_TRACER_H
 
 #include "ns3/ndnSIM/model/ndn-common.hpp"
-#include "ns3/ndnSIM/model/ndn-face.hpp"
 
 #include "ns3/ptr.h"
 #include "ns3/simple-ref-count.h"
diff --git a/wscript b/wscript
index 30ba249..444f7ac 100644
--- a/wscript
+++ b/wscript
@@ -138,13 +138,8 @@
     module_dirs = ['apps', 'helper', 'model', 'utils']
     module.source = bld.path.ant_glob(['%s/**/*.cpp' % dir for dir in module_dirs],
                                       excl=[
-                                          'apps/*',
-                                          'model/ndn-app-face.cpp',
-                                          'model/ndn-app-link-service.cpp',
-                                          'helper/ndn-app-helper.cpp',
-                                          'helper/ndn-scenario-helper.cpp',
-                                          'utils/topology/*',
-                                          'utils/tracers/*',
+                                          'apps/ndn-consumer*.cpp',
+                                          'apps/ndn-producer*.cpp',
                                           'model/ip-faces/*']) + ndnCxxSrc + nfdSrc
 
     module_dirs = ['NFD/core', 'NFD/daemon', 'NFD/rib', 'apps', 'helper', 'model', 'utils']
@@ -159,7 +154,7 @@
     if bld.env.ENABLE_TESTS:
         bld.recurse('tests')
 
-    # bld.ns3_python_bindings()
+    bld.ns3_python_bindings()
 
 @TaskGen.feature('ns3fullmoduleheaders')
 @TaskGen.after_method('process_rule')