face: reimplement EndpointId with std::variant

Refs: #5041
Change-Id: Ib8aced49a7aa14b137fb06de4a0ae8b979f07587
diff --git a/daemon/face/datagram-transport.hpp b/daemon/face/datagram-transport.hpp
index e053af2..51f06a0 100644
--- a/daemon/face/datagram-transport.hpp
+++ b/daemon/face/datagram-transport.hpp
@@ -37,15 +37,18 @@
 struct Unicast {};
 struct Multicast {};
 
-/** \brief Implements Transport for datagram-based protocols.
+/**
+ * \brief Implements Transport for datagram-based protocols.
  *
- *  \tparam Protocol a datagram-based protocol in Boost.Asio
+ * \tparam Protocol A datagram-based protocol in Boost.Asio
+ * \tparam Addressing The addressing mode, either Unicast or Multicast
  */
-template<class Protocol, class Addressing = Unicast>
+template<class Protocol, class Addressing>
 class DatagramTransport : public Transport
 {
 public:
   using protocol = Protocol;
+  using addressing = Addressing;
 
   /** \brief Construct datagram transport.
    *
@@ -85,9 +88,6 @@
   void
   resetRecentlyReceived();
 
-  static EndpointId
-  makeEndpointId(const typename protocol::endpoint& ep);
-
 protected:
   typename protocol::socket m_socket;
   typename protocol::endpoint m_sender;
@@ -190,7 +190,10 @@
   }
   m_hasRecentlyReceived = true;
 
-  this->receive(element, makeEndpointId(m_sender));
+  if constexpr (std::is_same_v<addressing, Multicast>)
+    this->receive(element, m_sender);
+  else
+    this->receive(element);
 }
 
 template<class T, class U>
@@ -254,13 +257,6 @@
   m_hasRecentlyReceived = false;
 }
 
-template<class T, class U>
-EndpointId
-DatagramTransport<T, U>::makeEndpointId(const typename protocol::endpoint&)
-{
-  return 0;
-}
-
 } // namespace nfd::face
 
 #endif // NFD_DAEMON_FACE_DATAGRAM_TRANSPORT_HPP
diff --git a/daemon/face/ethernet-transport.cpp b/daemon/face/ethernet-transport.cpp
index 53de0b7..c122a80 100644
--- a/daemon/face/ethernet-transport.cpp
+++ b/daemon/face/ethernet-transport.cpp
@@ -29,8 +29,6 @@
 
 #include <pcap/pcap.h>
 
-#include <cstring> // for memcpy()
-
 #include <boost/endian/conversion.hpp>
 
 namespace nfd::face {
@@ -207,13 +205,7 @@
   }
   m_hasRecentlyReceived = true;
 
-  static_assert(sizeof(EndpointId) >= ethernet::ADDR_LEN, "EndpointId is too small");
-  EndpointId endpoint = 0;
-  if (m_destAddress.isMulticast()) {
-    std::memcpy(&endpoint, sender.data(), sender.size());
-  }
-
-  this->receive(element, endpoint);
+  this->receive(element, m_destAddress.isMulticast() ? sender : EndpointId{});
 }
 
 void
diff --git a/daemon/face/face-common.hpp b/daemon/face/face-common.hpp
index 039d2fe..996d7b6 100644
--- a/daemon/face/face-common.hpp
+++ b/daemon/face/face-common.hpp
@@ -26,12 +26,14 @@
 #ifndef NFD_DAEMON_FACE_FACE_COMMON_HPP
 #define NFD_DAEMON_FACE_FACE_COMMON_HPP
 
-#include "core/common.hpp"
+#include "ethernet-protocol.hpp"
+#include "udp-protocol.hpp"
 #include "common/logger.hpp"
 
 #include <ndn-cxx/encoding/nfd-constants.hpp>
 
 #include <boost/logic/tribool.hpp>
+#include <variant>
 
 namespace nfd {
 namespace face {
@@ -62,15 +64,17 @@
  */
 constexpr ssize_t MIN_MTU = 64;
 
-/** \brief Identifies a remote endpoint on the link.
+/**
+ * \brief Identifies a remote endpoint on the link.
  *
- *  This ID is only meaningful in the context of the same Transport.
- *  Incoming packets from the same remote endpoint have the same EndpointId,
- *  and incoming packets from different remote endpoints have different EndpointIds.
+ * This ID is only meaningful in the context of the same Transport.
+ * Incoming packets from the same remote endpoint have the same EndpointId,
+ * and incoming packets from different remote endpoints have different EndpointIds.
  *
- *  Typically, a point-to-point Transport has only one meaningful EndpointId (usually 0).
+ * Typically, a point-to-point Transport has only one meaningful EndpointId,
+ * represented by `std::monostate`.
  */
-using EndpointId = uint64_t;
+using EndpointId = std::variant<std::monostate, ethernet::Address, udp::Endpoint>;
 
 /** \brief Parameters used to set Transport properties or LinkService options on a newly created face.
  *
diff --git a/daemon/face/face-endpoint.cpp b/daemon/face/face-endpoint.cpp
new file mode 100644
index 0000000..9871b2e
--- /dev/null
+++ b/daemon/face/face-endpoint.cpp
@@ -0,0 +1,53 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2022,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "face-endpoint.hpp"
+
+#include <boost/hana/functional/overload.hpp>
+
+namespace nfd {
+
+FaceEndpoint::FaceEndpoint(Face& face, const EndpointId& endpoint)
+  : face(face)
+  , endpoint(endpoint)
+{
+}
+
+void
+FaceEndpoint::print(std::ostream& os) const
+{
+  std::visit(boost::hana::overload(
+    [&] (std::monostate) {
+      os << face.getId();
+    },
+    [&] (const ethernet::Address& ep) {
+      os << '(' << face.getId() << ", " << ep << ')';
+    },
+    [&] (const udp::Endpoint& ep) {
+      os << '(' << face.getId() << ", " << ep << ')';
+    }), endpoint);
+}
+
+} // namespace nfd
diff --git a/daemon/face/face-endpoint.hpp b/daemon/face/face-endpoint.hpp
index 366c743..c9badef 100644
--- a/daemon/face/face-endpoint.hpp
+++ b/daemon/face/face-endpoint.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2021,  Regents of the University of California,
+ * Copyright (c) 2014-2022,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -30,16 +30,25 @@
 
 namespace nfd {
 
-/** \brief Represents a face-endpoint pair in the forwarder.
- *  \sa face::Face, face::EndpointId
+/**
+ * \brief Represents a face-endpoint pair in the forwarder.
+ * \sa face::Face, face::EndpointId
  */
 class FaceEndpoint
 {
 public:
-  FaceEndpoint(Face& face, EndpointId endpoint)
-    : face(face)
-    , endpoint(endpoint)
+  explicit
+  FaceEndpoint(Face& face, const EndpointId& endpoint = {});
+
+private:
+  void
+  print(std::ostream& os) const;
+
+  friend std::ostream&
+  operator<<(std::ostream& os, const FaceEndpoint& fe)
   {
+    fe.print(os);
+    return os;
   }
 
 public:
@@ -47,12 +56,6 @@
   const EndpointId endpoint;
 };
 
-inline std::ostream&
-operator<<(std::ostream& os, const FaceEndpoint& fe)
-{
-  return os << '(' << fe.face.getId() << ',' << fe.endpoint << ')';
-}
-
 } // namespace nfd
 
 #endif // NFD_DAEMON_FACE_FACE_ENDPOINT_HPP
diff --git a/daemon/face/lp-reassembler.cpp b/daemon/face/lp-reassembler.cpp
index 6c27d80..7f101bc 100644
--- a/daemon/face/lp-reassembler.cpp
+++ b/daemon/face/lp-reassembler.cpp
@@ -40,7 +40,7 @@
 }
 
 std::tuple<bool, Block, lp::Packet>
-LpReassembler::receiveFragment(EndpointId remoteEndpoint, const lp::Packet& packet)
+LpReassembler::receiveFragment(const EndpointId& remoteEndpoint, const lp::Packet& packet)
 {
   BOOST_ASSERT(packet.has<lp::FragmentField>());
 
diff --git a/daemon/face/lp-reassembler.hpp b/daemon/face/lp-reassembler.hpp
index 8009c67..30fec04 100644
--- a/daemon/face/lp-reassembler.hpp
+++ b/daemon/face/lp-reassembler.hpp
@@ -79,19 +79,20 @@
    *  \throw tlv::Error packet is malformed
    */
   std::tuple<bool, Block, lp::Packet>
-  receiveFragment(EndpointId remoteEndpoint, const lp::Packet& packet);
+  receiveFragment(const EndpointId& remoteEndpoint, const lp::Packet& packet);
 
   /** \brief count of partial packets
    */
   size_t
   size() const;
 
-  /** \brief signals before a partial packet is dropped due to timeout
+  /**
+   * \brief Notifies before a partial packet is dropped due to timeout.
    *
-   *  If a partial packet is incomplete and no new fragment is received
-   *  within Options::reassemblyTimeout, it would be dropped due to timeout.
-   *  Before it's erased, this signal is emitted with the remote endpoint,
-   *  and the number of fragments being dropped.
+   * If a partial packet is incomplete and no new fragments are received within
+   * Options::reassemblyTimeout, the partial packet is dropped due to timeout.
+   * Before dropping the packet, this signal is emitted with the remote endpoint
+   * and the number of fragments being dropped.
    */
   signal::Signal<LpReassembler, EndpointId, size_t> beforeTimeout;
 
diff --git a/daemon/face/multicast-udp-transport.cpp b/daemon/face/multicast-udp-transport.cpp
index e0b7ac5..bcb799e 100644
--- a/daemon/face/multicast-udp-transport.cpp
+++ b/daemon/face/multicast-udp-transport.cpp
@@ -31,7 +31,6 @@
 
 #include <boost/asio/ip/multicast.hpp>
 #include <boost/asio/ip/v6_only.hpp>
-#include <boost/functional/hash.hpp>
 
 #ifdef __linux__
 #include <cerrno>       // for errno
@@ -191,21 +190,4 @@
   }
 }
 
-template<>
-EndpointId
-DatagramTransport<boost::asio::ip::udp, Multicast>::makeEndpointId(const protocol::endpoint& ep)
-{
-  if (ep.address().is_v4()) {
-    return (static_cast<uint64_t>(ep.port()) << 32) |
-            static_cast<uint64_t>(ep.address().to_v4().to_ulong());
-  }
-  else {
-    size_t seed = 0;
-    const auto& addrBytes = ep.address().to_v6().to_bytes();
-    boost::hash_range(seed, addrBytes.begin(), addrBytes.end());
-    boost::hash_combine(seed, ep.port());
-    return seed;
-  }
-}
-
 } // namespace nfd::face
diff --git a/daemon/face/multicast-udp-transport.hpp b/daemon/face/multicast-udp-transport.hpp
index 5a19a0c..23c1e1d 100644
--- a/daemon/face/multicast-udp-transport.hpp
+++ b/daemon/face/multicast-udp-transport.hpp
@@ -35,14 +35,6 @@
 
 NFD_LOG_MEMBER_DECL_SPECIALIZED((DatagramTransport<boost::asio::ip::udp, Multicast>));
 
-// Explicit specialization of makeEndpointId for the UDP multicast case.
-// Note that this "shall be declared before the first use of the specialization
-// that would cause an implicit instantiation to take place, in every translation
-// unit in which such a use occurs".
-template<>
-EndpointId
-DatagramTransport<boost::asio::ip::udp, Multicast>::makeEndpointId(const protocol::endpoint& ep);
-
 /**
  * \brief A Transport that communicates on a UDP multicast group
  */
diff --git a/daemon/face/transport.hpp b/daemon/face/transport.hpp
index ed91cbc..1c24c57 100644
--- a/daemon/face/transport.hpp
+++ b/daemon/face/transport.hpp
@@ -31,7 +31,8 @@
 
 namespace nfd::face {
 
-/** \brief Indicates the state of a transport.
+/**
+ * \brief Indicates the state of a transport.
  */
 enum class TransportState {
   NONE,
@@ -263,13 +264,14 @@
   }
 
 protected: // upper interface to be invoked by subclass
-  /** \brief Pass a received link-layer packet to the upper layer for further processing
-   *  \param packet the received packet, must be a valid and well-formed TLV block
-   *  \param endpoint the source endpoint
-   *  \warning Behavior is undefined if packet size exceeds the MTU limit
+  /**
+   * \brief Pass a received link-layer packet to the upper layer for further processing.
+   * \param packet The received packet, must be a valid and well-formed TLV block
+   * \param endpoint The source endpoint, optional for unicast transports
+   * \warning Behavior is undefined if packet size exceeds the MTU limit.
    */
   void
-  receive(const Block& packet, const EndpointId& endpoint = 0);
+  receive(const Block& packet, const EndpointId& endpoint = {});
 
 protected: // properties to be set by subclass
   void
diff --git a/daemon/fw/forwarder.cpp b/daemon/fw/forwarder.cpp
index d984f0c..f4f5928 100644
--- a/daemon/fw/forwarder.cpp
+++ b/daemon/fw/forwarder.cpp
@@ -221,7 +221,7 @@
 
   // dispatch to strategy: after receive Interest
   m_strategyChoice.findEffectiveStrategy(*pitEntry)
-    .afterReceiveInterest(interest, FaceEndpoint(ingress.face, 0), pitEntry);
+    .afterReceiveInterest(interest, FaceEndpoint(ingress.face), pitEntry);
 }
 
 void
diff --git a/tests/daemon/face/datagram-transport.t.cpp b/tests/daemon/face/datagram-transport.t.cpp
index 055584c..4e88ff2 100644
--- a/tests/daemon/face/datagram-transport.t.cpp
+++ b/tests/daemon/face/datagram-transport.t.cpp
@@ -82,8 +82,12 @@
   BOOST_REQUIRE_EQUAL(this->receivedPackets->size(), 2);
   BOOST_CHECK(this->receivedPackets->at(0).packet == pkt1);
   BOOST_CHECK(this->receivedPackets->at(1).packet == pkt2);
-  BOOST_CHECK_EQUAL(this->receivedPackets->at(0).endpoint,
-                    this->receivedPackets->at(1).endpoint);
+  BOOST_CHECK(this->receivedPackets->at(0).endpoint == this->receivedPackets->at(1).endpoint);
+  // check that the endpoint is empty (monostate) if and only if the transport is unicast
+  constexpr bool isUnicast = std::is_same_v<typename std::remove_pointer_t<decltype(T::transport)>::addressing,
+                                            face::Unicast>;
+  BOOST_CHECK_EQUAL(std::holds_alternative<std::monostate>(this->receivedPackets->at(0).endpoint),
+                    isUnicast);
 }
 
 BOOST_FIXTURE_TEST_CASE_TEMPLATE(ReceiveIncomplete, T, DatagramTransportFixtures, T)
diff --git a/tests/daemon/face/dummy-face.hpp b/tests/daemon/face/dummy-face.hpp
index 8374430..15ab445 100644
--- a/tests/daemon/face/dummy-face.hpp
+++ b/tests/daemon/face/dummy-face.hpp
@@ -60,17 +60,17 @@
   /** \brief causes the face to receive an Interest
    */
   void
-  receiveInterest(const Interest& interest, const EndpointId& endpointId);
+  receiveInterest(const Interest& interest, const EndpointId& endpointId = {});
 
   /** \brief causes the face to receive a Data
    */
   void
-  receiveData(const Data& data, const EndpointId& endpointId);
+  receiveData(const Data& data, const EndpointId& endpointId = {});
 
   /** \brief causes the face to receive a Nack
    */
   void
-  receiveNack(const lp::Nack& nack, const EndpointId& endpointId);
+  receiveNack(const lp::Nack& nack, const EndpointId& endpointId = {});
 
   /** \brief Emitted after a network-layer packet is sent.
    *
diff --git a/tests/daemon/face/face-endpoint.t.cpp b/tests/daemon/face/face-endpoint.t.cpp
new file mode 100644
index 0000000..123a0f9
--- /dev/null
+++ b/tests/daemon/face/face-endpoint.t.cpp
@@ -0,0 +1,62 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2014-2022,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "face/face-endpoint.hpp"
+
+#include "tests/test-common.hpp"
+#include "dummy-face.hpp"
+
+#include <boost/lexical_cast.hpp>
+
+namespace nfd::tests {
+
+using namespace nfd::face;
+
+BOOST_AUTO_TEST_SUITE(Face)
+BOOST_AUTO_TEST_SUITE(TestFaceEndpoint)
+
+BOOST_AUTO_TEST_CASE(Print)
+{
+  DummyFace face;
+  FaceEndpoint faceEndpoint1(face);
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(faceEndpoint1), "0");
+
+  ethernet::Address ethEp{0x01, 0x00, 0x5e, 0x90, 0x10, 0x01};
+  FaceEndpoint faceEndpoint2(face, ethEp);
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(faceEndpoint2), "(0, 01:00:5e:90:10:01)");
+
+  udp::Endpoint udp4Ep{boost::asio::ip::address_v4(0xe00017aa), 56363};
+  FaceEndpoint faceEndpoint3(face, udp4Ep);
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(faceEndpoint3), "(0, 224.0.23.170:56363)");
+
+  udp::Endpoint udp6Ep{boost::asio::ip::address_v6::loopback(), 12345};
+  FaceEndpoint faceEndpoint4(face, udp6Ep);
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(faceEndpoint4), "(0, [::1]:12345)");
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestFaceEndpoint
+BOOST_AUTO_TEST_SUITE_END() // Face
+
+} // namespace nfd::tests
diff --git a/tests/daemon/face/face.t.cpp b/tests/daemon/face/face.t.cpp
index 34a19a7..8b8448d 100644
--- a/tests/daemon/face/face.t.cpp
+++ b/tests/daemon/face/face.t.cpp
@@ -104,16 +104,16 @@
   face1->afterReceiveNack.connect([&] (auto&&...) { ++nReceivedNacks; });
 
   for (size_t i = 0; i < nInInterests; ++i) {
-    face1->receiveInterest(*makeInterest("/JSQdqward4"), 0);
+    face1->receiveInterest(*makeInterest("/JSQdqward4"));
   }
 
   for (size_t i = 0; i < nInData; ++i) {
-    face1->receiveData(*makeData("/hT8FDigWn1"), 0);
+    face1->receiveData(*makeData("/hT8FDigWn1"));
   }
 
   for (size_t i = 0; i < nInNacks; ++i) {
     face1->receiveNack(makeNack(*makeInterest("/StnEVTj4Ex", false, std::nullopt, 561),
-                                lp::NackReason::CONGESTION), 0);
+                                lp::NackReason::CONGESTION));
   }
 
   for (size_t i = 0; i < nOutInterests; ++i) {
diff --git a/tests/daemon/face/lp-reassembler.t.cpp b/tests/daemon/face/lp-reassembler.t.cpp
index 16a3592..073c3db 100644
--- a/tests/daemon/face/lp-reassembler.t.cpp
+++ b/tests/daemon/face/lp-reassembler.t.cpp
@@ -38,7 +38,7 @@
   LpReassemblerFixture()
   {
     reassembler.beforeTimeout.connect(
-      [this] (EndpointId remoteEp, size_t nDroppedFragments) {
+      [this] (const EndpointId& remoteEp, size_t nDroppedFragments) {
         timeoutHistory.emplace_back(remoteEp, nDroppedFragments);
       });
   }
@@ -72,7 +72,7 @@
   bool isComplete = false;
   Block netPacket;
   lp::Packet packet;
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received);
 
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
@@ -93,7 +93,7 @@
   bool isComplete = false;
   Block netPacket;
   lp::Packet packet;
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received);
 
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
@@ -113,7 +113,7 @@
   bool isComplete = false;
   Block netPacket;
   lp::Packet packet;
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received);
 
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
@@ -132,7 +132,7 @@
   bool isComplete = false;
   Block netPacket;
   lp::Packet packet;
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received);
 
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
@@ -172,15 +172,15 @@
   Block netPacket;
   lp::Packet packet;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 1);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 1);
 
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received3);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received3);
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
   BOOST_CHECK_EQUAL_COLLECTIONS(data, data + sizeof(data), netPacket.begin(), netPacket.end());
@@ -215,13 +215,13 @@
   Block netPacket;
   lp::Packet packet;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment(0, received3);
+  std::tie(isComplete, netPacket, packet) = reassembler.receiveFragment({}, received3);
   BOOST_REQUIRE(isComplete);
   BOOST_CHECK(packet.has<lp::NextHopFaceIdField>());
   BOOST_CHECK_EQUAL_COLLECTIONS(data, data + sizeof(data), netPacket.begin(), netPacket.end());
@@ -254,14 +254,14 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, frag2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, frag2);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, frag0);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, frag0);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, frag1);
-  BOOST_REQUIRE(isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, frag1);
+  BOOST_TEST(isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(Duplicate)
@@ -276,11 +276,11 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, frag0);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, frag0);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(1, frag0);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, frag0);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(Timeout)
@@ -301,21 +301,21 @@
   received2.add<lp::FragCountField>(2);
   received2.add<lp::SequenceField>(1001);
 
-  const EndpointId REMOTE_EP = 11028;
+  const EndpointId REMOTE_EP = ethernet::getDefaultMulticastAddress();
   bool isComplete = false;
   std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP, received1);
-  BOOST_REQUIRE(!isComplete);
+  BOOST_TEST(!isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 1);
   BOOST_CHECK(timeoutHistory.empty());
 
   advanceClocks(1_ms, 600);
   BOOST_CHECK_EQUAL(reassembler.size(), 0);
   BOOST_REQUIRE_EQUAL(timeoutHistory.size(), 1);
-  BOOST_CHECK_EQUAL(std::get<0>(timeoutHistory.back()), REMOTE_EP);
+  BOOST_CHECK(std::get<0>(timeoutHistory.back()) == REMOTE_EP);
   BOOST_CHECK_EQUAL(std::get<1>(timeoutHistory.back()), 1);
 
   std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP, received2);
-  BOOST_REQUIRE(!isComplete);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(MissingSequence)
@@ -344,19 +344,19 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received3);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received3);
+  BOOST_TEST(!isComplete);
 
   advanceClocks(1_ms, 600);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(FragCountOverLimit)
@@ -372,8 +372,8 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(MissingFragCount)
@@ -403,14 +403,14 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received3);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received3);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_CASE(OverFragCount)
@@ -444,14 +444,14 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received1);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received1);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received2);
+  BOOST_TEST(!isComplete);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(0, received3);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment({}, received3);
+  BOOST_TEST(!isComplete);
 }
 
 BOOST_AUTO_TEST_SUITE_END() // MultiFragment
@@ -491,20 +491,23 @@
 
   bool isComplete = false;
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(1, frag1_1);
-  BOOST_REQUIRE(!isComplete);
+  const EndpointId REMOTE_EP_1 = ethernet::Address::fromString("11:22:33:45:67:89");
+  const EndpointId REMOTE_EP_2 = ethernet::Address::fromString("11:22:33:ab:cd:ef");
+
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP_1, frag1_1);
+  BOOST_TEST(!isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 1);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(2, frag2_2);
-  BOOST_REQUIRE(!isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP_2, frag2_2);
+  BOOST_TEST(!isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 2);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(1, frag1_2);
-  BOOST_REQUIRE(isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP_1, frag1_2);
+  BOOST_TEST(isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 1);
 
-  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(2, frag2_1);
-  BOOST_REQUIRE(isComplete);
+  std::tie(isComplete, std::ignore, std::ignore) = reassembler.receiveFragment(REMOTE_EP_2, frag2_1);
+  BOOST_TEST(isComplete);
   BOOST_CHECK_EQUAL(reassembler.size(), 0);
 }
 
diff --git a/tests/daemon/face/multicast-udp-transport.t.cpp b/tests/daemon/face/multicast-udp-transport.t.cpp
index f32d30f..efdd4f2 100644
--- a/tests/daemon/face/multicast-udp-transport.t.cpp
+++ b/tests/daemon/face/multicast-udp-transport.t.cpp
@@ -72,7 +72,7 @@
   BOOST_CHECK_EQUAL(transport->canChangePersistencyTo(ndn::nfd::FACE_PERSISTENCY_PERMANENT), true);
 }
 
-BOOST_FIXTURE_TEST_CASE_TEMPLATE(ReceiveMultipleRemoteEndpoints, T, MulticastUdpTransportFixtures, T)
+BOOST_FIXTURE_TEST_CASE_TEMPLATE(ReceiveFromMultipleEndpoints, T, MulticastUdpTransportFixtures, T)
 {
   TRANSPORT_TEST_INIT();
 
@@ -93,8 +93,8 @@
   BOOST_CHECK_EQUAL(this->transport->getState(), TransportState::UP);
 
   BOOST_REQUIRE_EQUAL(this->receivedPackets->size(), 2);
-  BOOST_CHECK_EQUAL(this->receivedPackets->at(0).endpoint,
-                    this->receivedPackets->at(1).endpoint);
+  BOOST_CHECK(this->receivedPackets->at(0).endpoint == this->receivedPackets->at(1).endpoint);
+  BOOST_CHECK(std::holds_alternative<nfd::udp::Endpoint>(this->receivedPackets->at(0).endpoint));
 
   this->sendToGroup(remoteSockTx2, buf1);
   this->sendToGroup(remoteSockTx2, buf2);
@@ -105,10 +105,11 @@
   BOOST_CHECK_EQUAL(this->transport->getState(), TransportState::UP);
 
   BOOST_REQUIRE_EQUAL(this->receivedPackets->size(), 4);
-  BOOST_CHECK_EQUAL(this->receivedPackets->at(2).endpoint,
-                    this->receivedPackets->at(3).endpoint);
-  BOOST_CHECK_NE(this->receivedPackets->at(0).endpoint,
-                 this->receivedPackets->at(2).endpoint);
+  EndpointId epId2(remoteSockTx2.local_endpoint());
+  BOOST_CHECK(this->receivedPackets->at(0).endpoint != epId2);
+  BOOST_CHECK(this->receivedPackets->at(1).endpoint != epId2);
+  BOOST_CHECK(this->receivedPackets->at(2).endpoint == epId2);
+  BOOST_CHECK(this->receivedPackets->at(3).endpoint == epId2);
 }
 
 BOOST_AUTO_TEST_SUITE_END() // TestMulticastUdpTransport
diff --git a/tests/daemon/face/stream-transport.t.cpp b/tests/daemon/face/stream-transport.t.cpp
index 9c13653..2acacfb 100644
--- a/tests/daemon/face/stream-transport.t.cpp
+++ b/tests/daemon/face/stream-transport.t.cpp
@@ -93,8 +93,8 @@
   BOOST_REQUIRE_EQUAL(this->receivedPackets->size(), 2);
   BOOST_CHECK(this->receivedPackets->at(0).packet == pkt1);
   BOOST_CHECK(this->receivedPackets->at(1).packet == pkt2);
-  BOOST_CHECK_EQUAL(this->receivedPackets->at(0).endpoint, 0);
-  BOOST_CHECK_EQUAL(this->receivedPackets->at(1).endpoint, 0);
+  BOOST_CHECK(this->receivedPackets->at(0).endpoint == EndpointId{});
+  BOOST_CHECK(this->receivedPackets->at(1).endpoint == EndpointId{});
 }
 
 BOOST_FIXTURE_TEST_CASE_TEMPLATE(ReceiveMultipleSegments, T, StreamTransportFixtures, T)
diff --git a/tests/daemon/face/websocket-transport.t.cpp b/tests/daemon/face/websocket-transport.t.cpp
index fe79de9..e8733b2 100644
--- a/tests/daemon/face/websocket-transport.t.cpp
+++ b/tests/daemon/face/websocket-transport.t.cpp
@@ -166,8 +166,8 @@
   BOOST_REQUIRE_EQUAL(this->serverReceivedPackets->size(), 2);
   BOOST_CHECK(this->serverReceivedPackets->at(0).packet == pkt1);
   BOOST_CHECK(this->serverReceivedPackets->at(1).packet == pkt2);
-  BOOST_CHECK_EQUAL(this->serverReceivedPackets->at(0).endpoint, 0);
-  BOOST_CHECK_EQUAL(this->serverReceivedPackets->at(1).endpoint, 0);
+  BOOST_CHECK(this->serverReceivedPackets->at(0).endpoint == EndpointId{});
+  BOOST_CHECK(this->serverReceivedPackets->at(1).endpoint == EndpointId{});
 }
 
 BOOST_FIXTURE_TEST_CASE_TEMPLATE(ReceiveMalformed, T, WebSocketTransportFixtures, T)
diff --git a/tests/daemon/fw/best-route-strategy.t.cpp b/tests/daemon/fw/best-route-strategy.t.cpp
index efaf90c..ce408ec 100644
--- a/tests/daemon/fw/best-route-strategy.t.cpp
+++ b/tests/daemon/fw/best-route-strategy.t.cpp
@@ -86,7 +86,7 @@
   // first Interest goes to nexthop with lowest FIB cost,
   // however face1 is downstream so it cannot be used
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
   BOOST_REQUIRE_EQUAL(strategy.sendInterestHistory.size(), 1);
   BOOST_CHECK_EQUAL(strategy.sendInterestHistory.back().outFaceId, face2->getId());
 
@@ -98,7 +98,7 @@
   std::function<void()> periodicalRetxFrom4; // let periodicalRetxFrom4 lambda capture itself
   periodicalRetxFrom4 = [&] {
     pitEntry->insertOrUpdateInRecord(*face4, *interest);
-    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face4, 0), pitEntry);
+    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face4), pitEntry);
 
     size_t nSent = strategy.sendInterestHistory.size();
     if (nSent > nSentLast) {
@@ -130,7 +130,7 @@
   for (int i = 0; i < 3; ++i) {
     this->advanceClocks(TICK, fw::RetxSuppressionExponential::DEFAULT_MAX_INTERVAL * 2);
     pitEntry->insertOrUpdateInRecord(*face5, *interest);
-    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face5, 0), pitEntry);
+    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face5), pitEntry);
   }
   BOOST_REQUIRE_EQUAL(strategy.sendInterestHistory.size(), 3);
   BOOST_CHECK_NE(strategy.sendInterestHistory[0].outFaceId, face1->getId());
diff --git a/tests/daemon/fw/forwarder.t.cpp b/tests/daemon/fw/forwarder.t.cpp
index 98f767f..6fbb688 100644
--- a/tests/daemon/fw/forwarder.t.cpp
+++ b/tests/daemon/fw/forwarder.t.cpp
@@ -69,7 +69,7 @@
   BOOST_CHECK_EQUAL(forwarder.getCounters().nOutInterests, 0);
   BOOST_CHECK_EQUAL(forwarder.getCounters().nCsHits, 0);
   BOOST_CHECK_EQUAL(forwarder.getCounters().nCsMisses, 0);
-  face1->receiveInterest(*makeInterest("/A/B"), 0);
+  face1->receiveInterest(*makeInterest("/A/B"));
   this->advanceClocks(100_ms, 1_s);
   BOOST_REQUIRE_EQUAL(face2->sentInterests.size(), 1);
   BOOST_CHECK_EQUAL(face2->sentInterests[0].getName(), "/A/B");
@@ -83,7 +83,7 @@
 
   BOOST_CHECK_EQUAL(forwarder.getCounters().nInData, 0);
   BOOST_CHECK_EQUAL(forwarder.getCounters().nOutData, 0);
-  face2->receiveData(*makeData("/A/B"), 0);
+  face2->receiveData(*makeData("/A/B"));
   this->advanceClocks(100_ms, 1_s);
   BOOST_REQUIRE_EQUAL(face1->sentData.size(), 1);
   BOOST_CHECK_EQUAL(face1->sentData[0].getName(), "/A/B");
@@ -116,7 +116,7 @@
 
   BOOST_CHECK_EQUAL(forwarder.getCounters().nCsHits, 0);
   BOOST_CHECK_EQUAL(forwarder.getCounters().nCsMisses, 0);
-  face1->receiveInterest(*makeInterest("/A", true), 0);
+  face1->receiveInterest(*makeInterest("/A", true));
   this->advanceClocks(1_ms, 5_ms);
   // Interest matching ContentStore should not be forwarded
   BOOST_REQUIRE_EQUAL(face2->sentInterests.size(), 0);
@@ -145,7 +145,7 @@
 
   auto interest = makeInterest("/A");
   BOOST_CHECK_EQUAL(interest->hasNonce(), false);
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
 
   // Ensure Nonce added if incoming packet did not have Nonce
   BOOST_REQUIRE_EQUAL(face2->getCounters().nOutInterests, 1);
@@ -191,7 +191,7 @@
   auto interest = makeInterest("/A/B");
   interest->setTag(make_shared<lp::NextHopFaceIdTag>(face2->getId()));
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(face3->sentInterests.size(), 0);
   BOOST_REQUIRE_EQUAL(face2->sentInterests.size(), 1);
@@ -211,7 +211,7 @@
 
   // Incoming interest w/o HopLimit will not be dropped on send or receive paths
   auto interestNoHopLimit = makeInterest("/remote/abcdefgh");
-  faceIn->receiveInterest(*interestNoHopLimit, 0);
+  faceIn->receiveInterest(*interestNoHopLimit);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(faceRemote->sentInterests.size(), 1);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nInHopLimitZero, 0);
@@ -222,7 +222,7 @@
   // Incoming interest w/ HopLimit > 1 will not be dropped on send/receive
   auto interestHopLimit2 = makeInterest("/remote/ijklmnop");
   interestHopLimit2->setHopLimit(2);
-  faceIn->receiveInterest(*interestHopLimit2, 0);
+  faceIn->receiveInterest(*interestHopLimit2);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nOutInterests, 2);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nInHopLimitZero, 0);
@@ -234,7 +234,7 @@
   // Incoming interest w/ HopLimit == 1 will be dropped on send path if going out on remote face
   auto interestHopLimit1Remote = makeInterest("/remote/qrstuvwx");
   interestHopLimit1Remote->setHopLimit(1);
-  faceIn->receiveInterest(*interestHopLimit1Remote, 0);
+  faceIn->receiveInterest(*interestHopLimit1Remote);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nOutInterests, 2);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nInHopLimitZero, 0);
@@ -244,7 +244,7 @@
   // Incoming interest w/ HopLimit == 1 will not be dropped on send path if going out on local face
   auto interestHopLimit1Local = makeInterest("/local/abcdefgh");
   interestHopLimit1Local->setHopLimit(1);
-  faceIn->receiveInterest(*interestHopLimit1Local, 0);
+  faceIn->receiveInterest(*interestHopLimit1Local);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(faceLocal->getCounters().nOutInterests, 1);
   BOOST_CHECK_EQUAL(faceLocal->getCounters().nInHopLimitZero, 0);
@@ -256,7 +256,7 @@
   // Interest w/ HopLimit == 0 will be dropped on receive path
   auto interestHopLimit0 = makeInterest("/remote/yzabcdef");
   interestHopLimit0->setHopLimit(0);
-  faceIn->receiveInterest(*interestHopLimit0, 0);
+  faceIn->receiveInterest(*interestHopLimit0);
   this->advanceClocks(100_ms, 1_s);
   BOOST_CHECK_EQUAL(faceRemote->getCounters().nOutInterests, 2);
   BOOST_CHECK_EQUAL(faceIn->getCounters().nInHopLimitZero, 1);
@@ -267,7 +267,7 @@
 BOOST_AUTO_TEST_CASE(AddDefaultHopLimit)
 {
   auto face = addFace();
-  auto faceEndpoint = FaceEndpoint(*face, 0);
+  auto faceEndpoint = FaceEndpoint(*face);
   Pit& pit = forwarder.getPit();
   auto i1 = makeInterest("/A");
   auto pitA = pit.insert(*i1).first;
@@ -306,47 +306,47 @@
   // local face, /localhost: OK
   strategy.afterReceiveInterest_count = 0;
   auto i1 = makeInterest("/localhost/A1");
-  forwarder.onIncomingInterest(*i1, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*i1, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategy.afterReceiveInterest_count, 1);
 
   // non-local face, /localhost: violate
   strategy.afterReceiveInterest_count = 0;
   auto i2 = makeInterest("/localhost/A2");
-  forwarder.onIncomingInterest(*i2, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingInterest(*i2, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(strategy.afterReceiveInterest_count, 0);
 
   // local face, non-/localhost: OK
   strategy.afterReceiveInterest_count = 0;
   auto i3 = makeInterest("/A3");
-  forwarder.onIncomingInterest(*i3, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*i3, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategy.afterReceiveInterest_count, 1);
 
   // non-local face, non-/localhost: OK
   strategy.afterReceiveInterest_count = 0;
   auto i4 = makeInterest("/A4");
-  forwarder.onIncomingInterest(*i4, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingInterest(*i4, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(strategy.afterReceiveInterest_count, 1);
 
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 0);
 
   // local face, /localhost: OK
   auto d1 = makeData("/localhost/B1");
-  forwarder.onIncomingData(*d1, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingData(*d1, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 1);
 
   // non-local face, /localhost: violate
   auto d2 = makeData("/localhost/B2");
-  forwarder.onIncomingData(*d2, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingData(*d2, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 1);
 
   // local face, non-/localhost: OK
   auto d3 = makeData("/B3");
-  forwarder.onIncomingData(*d3, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingData(*d3, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 2);
 
   // non-local face, non-/localhost: OK
   auto d4 = makeData("/B4");
-  forwarder.onIncomingData(*d4, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingData(*d4, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 3);
 }
 
@@ -361,31 +361,31 @@
   auto interest1 = makeInterest("/A/1");
   strategyA.afterReceiveInterest_count = 0;
   strategyA.interestOutFace = face2;
-  forwarder.onIncomingInterest(*interest1, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*interest1, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveInterest_count, 1);
 
   auto interest2 = makeInterest("/B/2", true);
   strategyB.afterReceiveInterest_count = 0;
   strategyB.interestOutFace = face2;
-  forwarder.onIncomingInterest(*interest2, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*interest2, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyB.afterReceiveInterest_count, 1);
 
   this->advanceClocks(1_ms, 5_ms);
 
   auto data1 = makeData("/A/1");
   strategyA.beforeSatisfyInterest_count = 0;
-  forwarder.onIncomingData(*data1, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingData(*data1, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(strategyA.beforeSatisfyInterest_count, 1);
 
   auto data2 = makeData("/B/2/b");
   strategyB.beforeSatisfyInterest_count = 0;
-  forwarder.onIncomingData(*data2, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingData(*data2, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(strategyB.beforeSatisfyInterest_count, 1);
 
   auto interest3 = makeInterest("/A/3", false, 30_ms);
-  forwarder.onIncomingInterest(*interest3, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*interest3, FaceEndpoint(*face1));
   auto interest4 = makeInterest("/B/4", false, 5_s);
-  forwarder.onIncomingInterest(*interest4, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*interest4, FaceEndpoint(*face1));
 }
 
 BOOST_AUTO_TEST_CASE(IncomingData)
@@ -409,7 +409,7 @@
   pitC->insertOrUpdateInRecord(*face4, *interestC);
 
   auto dataD = makeData("/A/B/C/D");
-  forwarder.onIncomingData(*dataD, FaceEndpoint(*face3, 0));
+  forwarder.onIncomingData(*dataD, FaceEndpoint(*face3));
   this->advanceClocks(1_ms, 5_ms);
 
   BOOST_CHECK_EQUAL(face1->sentData.size(), 1);
@@ -477,14 +477,14 @@
   auto nack1 = makeNack(*interest1, lp::NackReason::CONGESTION);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack1, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingNack(nack1, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 1);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 0);
 
   auto nack2 = makeNack(*interest2, lp::NackReason::CONGESTION);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack2, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingNack(nack2, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 0);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 1);
 
@@ -498,7 +498,7 @@
   auto nack3 = makeNack(*makeInterest("/yEcw5HhdM", false, std::nullopt, 243), lp::NackReason::CONGESTION);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack3, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingNack(nack3, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 0);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 0);
 
@@ -510,7 +510,7 @@
   auto nack4a = makeNack(*interest4, lp::NackReason::CONGESTION);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack4a, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingNack(nack4a, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 0);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 0);
 
@@ -518,7 +518,7 @@
   auto nack4b = makeNack(*makeInterest("/Etab4KpY", false, std::nullopt, 294), lp::NackReason::CONGESTION);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack4b, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingNack(nack4b, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 0);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 0);
 
@@ -526,7 +526,7 @@
   pit4->insertOrUpdateOutRecord(*face3, *interest4);
   strategyA.afterReceiveNack_count = 0;
   strategyB.afterReceiveNack_count = 0;
-  forwarder.onIncomingNack(nack4a, FaceEndpoint(*face3, 0));
+  forwarder.onIncomingNack(nack4a, FaceEndpoint(*face3));
   BOOST_CHECK_EQUAL(strategyA.afterReceiveNack_count, 0);
   BOOST_CHECK_EQUAL(strategyB.afterReceiveNack_count, 0);
 }
@@ -620,19 +620,19 @@
   // receive Interest on face1
   face1->sentNacks.clear();
   auto interest1a = makeInterest("/zT4XwK0Hnx/28JBUvbEzc", false, std::nullopt, 732);
-  face1->receiveInterest(*interest1a, 0);
+  face1->receiveInterest(*interest1a);
   BOOST_CHECK(face1->sentNacks.empty());
 
   // receive Interest with duplicate Nonce on face1: legit retransmission
   face1->sentNacks.clear();
   auto interest1b = makeInterest("/zT4XwK0Hnx/28JBUvbEzc", false, std::nullopt, 732);
-  face1->receiveInterest(*interest1b, 0);
+  face1->receiveInterest(*interest1b);
   BOOST_CHECK(face1->sentNacks.empty());
 
   // receive Interest with duplicate Nonce on face2
   face2->sentNacks.clear();
   auto interest2a = makeInterest("/zT4XwK0Hnx/28JBUvbEzc", false, std::nullopt, 732);
-  face2->receiveInterest(*interest2a, 0);
+  face2->receiveInterest(*interest2a);
   BOOST_REQUIRE_EQUAL(face2->sentNacks.size(), 1);
   BOOST_CHECK_EQUAL(face2->sentNacks.back().getInterest().wireEncode(), interest2a->wireEncode());
   BOOST_CHECK_EQUAL(face2->sentNacks.back().getReason(), lp::NackReason::DUPLICATE);
@@ -640,13 +640,13 @@
   // receive Interest with new Nonce on face2
   face2->sentNacks.clear();
   auto interest2b = makeInterest("/zT4XwK0Hnx/28JBUvbEzc", false, std::nullopt, 944);
-  face2->receiveInterest(*interest2b, 0);
+  face2->receiveInterest(*interest2b);
   BOOST_CHECK(face2->sentNacks.empty());
 
   // receive Interest with duplicate Nonce on face3, don't send Nack to multi-access face
   face3->sentNacks.clear();
   auto interest3a = makeInterest("/zT4XwK0Hnx/28JBUvbEzc", false, std::nullopt, 732);
-  face3->receiveInterest(*interest3a, 0);
+  face3->receiveInterest(*interest3a);
   BOOST_CHECK(face3->sentNacks.empty());
 }
 
@@ -659,7 +659,7 @@
   face2->afterSend.connect([face1, face2] (uint32_t pktType) {
     if (pktType == tlv::Interest) {
       auto interest = make_shared<Interest>(face2->sentInterests.back());
-      getScheduler().schedule(170_ms, [face1, interest] { face1->receiveInterest(*interest, 0); });
+      getScheduler().schedule(170_ms, [face1, interest] { face1->receiveInterest(*interest); });
     }
   });
 
@@ -669,7 +669,7 @@
 
   // receive an Interest
   auto interest = makeInterest("/A/1", false, 50_ms, 82101183);
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
 
   // interest should be forwarded only once, as long as Nonce is in Dead Nonce List
   BOOST_ASSERT(25_ms * 40 < forwarder.getDeadNonceList().getLifetime());
@@ -693,7 +693,7 @@
   auto& pit = forwarder.getPit();
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
-  forwarder.onIncomingInterest(*interest, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingInterest(*interest, FaceEndpoint(*face1));
   this->advanceClocks(100_ms, 20_s);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 }
@@ -704,7 +704,7 @@
   auto data = makeData("/A");
 
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 0);
-  forwarder.onIncomingData(*data, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingData(*data, FaceEndpoint(*face1));
   this->advanceClocks(1_ms, 10_ms);
   BOOST_CHECK_EQUAL(forwarder.getCounters().nUnsolicitedData, 1);
 }
diff --git a/tests/daemon/fw/multicast-strategy.t.cpp b/tests/daemon/fw/multicast-strategy.t.cpp
index 3b91c63..a69c3a5 100644
--- a/tests/daemon/fw/multicast-strategy.t.cpp
+++ b/tests/daemon/fw/multicast-strategy.t.cpp
@@ -85,7 +85,7 @@
   auto pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
 
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
   BOOST_CHECK_EQUAL(strategy.rejectPendingInterestHistory.size(), 0);
   BOOST_CHECK_EQUAL(strategy.sendInterestHistory.size(), 1);
 
@@ -96,7 +96,7 @@
   pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face2, *interest);
 
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face2, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face2), pitEntry);
   // Since the interest is the same as the one sent out earlier, the PIT entry should not be
   // rejected, as any data coming back must be able to satisfy the original interest from face 1
   BOOST_CHECK_EQUAL(strategy.rejectPendingInterestHistory.size(), 0);
@@ -162,7 +162,7 @@
   auto pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face3, *interest);
 
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3), pitEntry);
   BOOST_CHECK_EQUAL(strategy.rejectPendingInterestHistory.size(), 0);
   BOOST_CHECK_EQUAL(strategy.sendInterestHistory.size(), 2);
   BOOST_TEST(didSendInterestTo(*face1));
@@ -179,7 +179,7 @@
   std::function<void()> periodicalRetxFrom4; // let periodicalRetxFrom4 lambda capture itself
   periodicalRetxFrom4 = [&] {
     pitEntry->insertOrUpdateInRecord(*face3, *interest);
-    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3, 0), pitEntry);
+    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3), pitEntry);
 
     size_t nSent = strategy.sendInterestHistory.size();
     if (nSent > nSentLast) {
@@ -207,7 +207,7 @@
   auto pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
 
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
   BOOST_CHECK_EQUAL(strategy.rejectPendingInterestHistory.size(), 0);
   BOOST_CHECK_EQUAL(strategy.sendInterestHistory.size(), 0);
 }
@@ -227,7 +227,7 @@
   auto interest = makeInterest("/t8ZiSOi3");
   auto pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
 
   // forwarded to faces 2 and 3
   BOOST_TEST(strategy.sendInterestHistory.size() == 2);
@@ -242,7 +242,7 @@
   interest->refreshNonce();
   pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face2, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face2, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face2), pitEntry);
 
   // forwarded only to face 1, suppressed on face 3
   BOOST_TEST(strategy.sendInterestHistory.size() == 1);
@@ -256,7 +256,7 @@
   interest->refreshNonce();
   pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face3, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3), pitEntry);
 
   // suppressed on face 1, forwarded on face 2 (and suppression window doubles)
   BOOST_TEST(strategy.sendInterestHistory.size() == 1);
@@ -270,7 +270,7 @@
   interest->refreshNonce();
   pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face3, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face3), pitEntry);
 
   // forwarded only to face 1, suppressed on face 2
   BOOST_TEST(strategy.sendInterestHistory.size() == 1);
@@ -284,7 +284,7 @@
   interest->refreshNonce();
   pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
 
   // forwarded to faces 2 and 3
   BOOST_TEST(strategy.sendInterestHistory.size() == 2);
@@ -303,7 +303,7 @@
   auto pitEntry = pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*face1, *interest);
 
-  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+  strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
   BOOST_CHECK_EQUAL(strategy.rejectPendingInterestHistory.size(), 0);
   BOOST_CHECK_EQUAL(strategy.sendInterestHistory.size(), 1);
 
@@ -491,12 +491,12 @@
   auto interest = makeInterest("ndn:/localhop/H0D6i5fc");
   auto pitEntry = this->pit.insert(*interest).first;
   pitEntry->insertOrUpdateInRecord(*this->inFace1, *interest);
-  this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->inFace1, 0), pitEntry);
+  this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->inFace1), pitEntry);
 
   if (this->inFace2 != nullptr) {
     auto interest2 = makeInterest("ndn:/localhop/H0D6i5fc");
     pitEntry->insertOrUpdateInRecord(*this->inFace2, *interest2);
-    this->strategy.afterReceiveInterest(*interest2, FaceEndpoint(*this->inFace2, 0), pitEntry);
+    this->strategy.afterReceiveInterest(*interest2, FaceEndpoint(*this->inFace2), pitEntry);
   }
 
   this->strategy.sendInterestHistory.clear();
diff --git a/tests/daemon/fw/pit-expiry.t.cpp b/tests/daemon/fw/pit-expiry.t.cpp
index c2b6c41..3153a7d 100644
--- a/tests/daemon/fw/pit-expiry.t.cpp
+++ b/tests/daemon/fw/pit-expiry.t.cpp
@@ -132,8 +132,8 @@
   interest1->setInterestLifetime(90_ms);
   interest2->setInterestLifetime(90_ms);
 
-  face1->receiveInterest(*interest1, 0);
-  face2->receiveInterest(*interest2, 0);
+  face1->receiveInterest(*interest1);
+  face2->receiveInterest(*interest2);
   BOOST_CHECK_EQUAL(pit.size(), 2);
 
   this->advanceClocks(100_ms);
@@ -156,10 +156,10 @@
   interest->setInterestLifetime(90_ms);
   auto data = makeData("/A/0");
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
 
   this->advanceClocks(30_ms);
-  face2->receiveData(*data, 0);
+  face2->receiveData(*data);
 
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
@@ -191,14 +191,14 @@
   Cs& cs = forwarder.getCs();
   cs.insert(*data);
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 1);
 
   this->advanceClocks(190_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 }
@@ -224,13 +224,13 @@
   auto interest = makeInterest("/A/0", false, 90_ms, 562);
   lp::Nack nack = makeNack(*interest, lp::NackReason::CONGESTION);
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
   auto entry = pit.find(*interest);
   entry->insertOrUpdateOutRecord(*face2, *interest);
   entry->insertOrUpdateOutRecord(*face3, *interest);
 
   this->advanceClocks(10_ms);
-  face2->receiveNack(nack, 0);
+  face2->receiveNack(nack);
 
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 1);
@@ -255,7 +255,7 @@
 
   auto interest = makeInterest("/A/0", false, 90_ms);
 
-  face->receiveInterest(*interest, 0);
+  face->receiveInterest(*interest);
   BOOST_CHECK_EQUAL(pit.size(), 1);
 
   this->advanceClocks(100_ms);
@@ -289,30 +289,30 @@
   auto interest2 = makeInterest("/A/0", false, 90_ms);
   auto data = makeData("/A/0");
 
-  face1->receiveInterest(*interest1, 0);
-  face2->receiveInterest(*interest2, 0);
+  face1->receiveInterest(*interest1);
+  face2->receiveInterest(*interest2);
   BOOST_CHECK_EQUAL(pit.size(), 2);
 
   // beforeSatisfyInterest: the first Data prolongs PIT expiry timer by 190 ms
   this->advanceClocks(30_ms);
-  face3->receiveData(*data, 0);
+  face3->receiveData(*data);
   this->advanceClocks(189_ms);
   BOOST_CHECK_EQUAL(pit.size(), 2);
   this->advanceClocks(2_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
-  face1->receiveInterest(*interest1, 0);
-  face2->receiveInterest(*interest2, 0);
+  face1->receiveInterest(*interest1);
+  face2->receiveInterest(*interest2);
 
   // beforeSatisfyInterest: the second Data prolongs PIT expiry timer
   // and the third one sets the timer to now
   this->advanceClocks(30_ms);
-  face3->receiveData(*data, 0);
+  face3->receiveData(*data);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 2);
 
   this->advanceClocks(30_ms);
-  face3->receiveData(*data, 0);
+  face3->receiveData(*data);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
@@ -341,27 +341,27 @@
   auto interest = makeInterest("/A/0", false, 90_ms);
   auto data = makeData("/A/0");
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
 
   // afterReceiveData: the first Data prolongs PIT expiry timer by 290 ms
   this->advanceClocks(30_ms);
-  face2->receiveData(*data, 0);
+  face2->receiveData(*data);
   this->advanceClocks(289_ms);
   BOOST_CHECK_EQUAL(pit.size(), 1);
   this->advanceClocks(2_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
 
   // afterReceiveData: the second Data prolongs PIT expiry timer
   // and the third one sets the timer to now
   this->advanceClocks(30_ms);
-  face2->receiveData(*data, 0);
+  face2->receiveData(*data);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 1);
 
   this->advanceClocks(30_ms);
-  face2->receiveData(*data, 0);
+  face2->receiveData(*data);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 
@@ -390,20 +390,20 @@
   auto interest = makeInterest("/A/0", false, 90_ms, 562);
   lp::Nack nack = makeNack(*interest, lp::NackReason::CONGESTION);
 
-  face1->receiveInterest(*interest, 0);
+  face1->receiveInterest(*interest);
   auto entry = pit.find(*interest);
   entry->insertOrUpdateOutRecord(*face2, *interest);
   entry->insertOrUpdateOutRecord(*face3, *interest);
 
   //pitEntry is not erased after receiving the first Nack
   this->advanceClocks(10_ms);
-  face2->receiveNack(nack, 0);
+  face2->receiveNack(nack);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 1);
 
   //pitEntry is erased after receiving the second Nack
   this->advanceClocks(10_ms);
-  face3->receiveNack(nack, 0);
+  face3->receiveNack(nack);
   this->advanceClocks(1_ms);
   BOOST_CHECK_EQUAL(pit.size(), 0);
 }
diff --git a/tests/daemon/fw/random-strategy.t.cpp b/tests/daemon/fw/random-strategy.t.cpp
index b89d48c..ae34b03 100644
--- a/tests/daemon/fw/random-strategy.t.cpp
+++ b/tests/daemon/fw/random-strategy.t.cpp
@@ -80,7 +80,7 @@
     auto pitEntry = pit.insert(*interest).first;
 
     pitEntry->insertOrUpdateInRecord(*face1, *interest);
-    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1, 0), pitEntry);
+    strategy.afterReceiveInterest(*interest, FaceEndpoint(*face1), pitEntry);
   }
 
   // Map outFaceId -> SentInterests
diff --git a/tests/daemon/fw/strategy-nack-return.t.cpp b/tests/daemon/fw/strategy-nack-return.t.cpp
index 9dcd0c9..4b6961d 100644
--- a/tests/daemon/fw/strategy-nack-return.t.cpp
+++ b/tests/daemon/fw/strategy-nack-return.t.cpp
@@ -108,7 +108,7 @@
   pitEntry->getOutRecord(*this->face3)->setIncomingNack(nack3);
 
   auto f = [&] {
-    this->strategy.afterReceiveNack(nack3, FaceEndpoint(*this->face3, 0), pitEntry);
+    this->strategy.afterReceiveNack(nack3, FaceEndpoint(*this->face3), pitEntry);
   };
   BOOST_REQUIRE(this->strategy.waitForAction(f, this->limitedIo, 2));
 
@@ -144,7 +144,7 @@
 
   lp::Nack nack3 = makeNack(*interest1, lp::NackReason::CONGESTION);
   pitEntry->getOutRecord(*this->face3)->setIncomingNack(nack3);
-  this->strategy.afterReceiveNack(nack3, FaceEndpoint(*this->face3, 0), pitEntry);
+  this->strategy.afterReceiveNack(nack3, FaceEndpoint(*this->face3), pitEntry);
 
   BOOST_CHECK_EQUAL(this->strategy.sendNackHistory.size(), 0); // don't send Nack until all upstreams have Nacked
 
@@ -152,7 +152,7 @@
   pitEntry->getOutRecord(*this->face4)->setIncomingNack(nack4);
 
   auto f = [&] {
-    this->strategy.afterReceiveNack(nack4, FaceEndpoint(*this->face4, 0), pitEntry);
+    this->strategy.afterReceiveNack(nack4, FaceEndpoint(*this->face4), pitEntry);
   };
   BOOST_REQUIRE(this->strategy.waitForAction(f, this->limitedIo));
 
@@ -186,7 +186,7 @@
 
   lp::Nack nack4 = makeNack(*interest2, lp::NackReason::CONGESTION);
   pitEntry->getOutRecord(*this->face4)->setIncomingNack(nack4);
-  this->strategy.afterReceiveNack(nack4, FaceEndpoint(*this->face4, 0), pitEntry);
+  this->strategy.afterReceiveNack(nack4, FaceEndpoint(*this->face4), pitEntry);
 
   BOOST_CHECK_EQUAL(this->strategy.sendNackHistory.size(), 0);
 }
@@ -319,13 +319,13 @@
 
   lp::Nack nack3 = makeNack(*interest1, Combination::firstReason);
   pitEntry->getOutRecord(*face3)->setIncomingNack(nack3);
-  strategy.afterReceiveNack(nack3, FaceEndpoint(*face3, 0), pitEntry);
+  strategy.afterReceiveNack(nack3, FaceEndpoint(*face3), pitEntry);
 
   BOOST_CHECK_EQUAL(strategy.sendNackHistory.size(), 0);
 
   lp::Nack nack4 = makeNack(*interest1, Combination::secondReason);
   pitEntry->getOutRecord(*face4)->setIncomingNack(nack4);
-  strategy.afterReceiveNack(nack4, FaceEndpoint(*face4, 0), pitEntry);
+  strategy.afterReceiveNack(nack4, FaceEndpoint(*face4), pitEntry);
 
   BOOST_REQUIRE_EQUAL(strategy.sendNackHistory.size(), 1);
   BOOST_CHECK_EQUAL(strategy.sendNackHistory[0].pitInterest.wireEncode(),
diff --git a/tests/daemon/fw/strategy-no-route.t.cpp b/tests/daemon/fw/strategy-no-route.t.cpp
index 4fab4e5..3dfce2c 100644
--- a/tests/daemon/fw/strategy-no-route.t.cpp
+++ b/tests/daemon/fw/strategy-no-route.t.cpp
@@ -165,7 +165,7 @@
   pitEntry->insertOrUpdateInRecord(*this->face1, *interest);
 
   auto f = [&] {
-    this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->face1, 0), pitEntry);
+    this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->face1), pitEntry);
   };
   BOOST_REQUIRE(this->strategy.waitForAction(f, this->limitedIo, 2));
 
diff --git a/tests/daemon/fw/strategy-scope-control.t.cpp b/tests/daemon/fw/strategy-scope-control.t.cpp
index d44460f..392becb 100644
--- a/tests/daemon/fw/strategy-scope-control.t.cpp
+++ b/tests/daemon/fw/strategy-scope-control.t.cpp
@@ -128,7 +128,7 @@
   pitEntry->insertOrUpdateInRecord(*this->localFace3, *interest);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3), pitEntry); },
     this->limitedIo));
 
   BOOST_CHECK_EQUAL(this->strategy.sendInterestHistory.size(), 1);
@@ -147,7 +147,7 @@
   pitEntry->insertOrUpdateInRecord(*this->localFace3, *interest);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3), pitEntry); },
     this->limitedIo, T::willRejectPitEntry() + T::willSendNackNoRoute()));
 
   BOOST_CHECK_EQUAL(this->strategy.sendInterestHistory.size(), 0);
@@ -170,7 +170,7 @@
   pitEntry->insertOrUpdateInRecord(*this->localFace3, *interest);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->localFace3), pitEntry); },
     this->limitedIo));
 
   BOOST_REQUIRE_EQUAL(this->strategy.sendInterestHistory.size(), 1);
@@ -190,7 +190,7 @@
   pitEntry->insertOrUpdateInRecord(*this->nonLocalFace1, *interest);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->nonLocalFace1, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->nonLocalFace1), pitEntry); },
     this->limitedIo, T::willRejectPitEntry() + T::willSendNackNoRoute()));
 
   BOOST_CHECK_EQUAL(this->strategy.sendInterestHistory.size(), 0);
@@ -213,7 +213,7 @@
   pitEntry->insertOrUpdateInRecord(*this->nonLocalFace1, *interest);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->nonLocalFace1, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveInterest(*interest, FaceEndpoint(*this->nonLocalFace1), pitEntry); },
     this->limitedIo));
 
   BOOST_REQUIRE_EQUAL(this->strategy.sendInterestHistory.size(), 1);
@@ -236,7 +236,7 @@
   pitEntry->insertOrUpdateOutRecord(*this->localFace4, *interest)->setIncomingNack(nack);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveNack(nack, FaceEndpoint(*this->localFace4, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveNack(nack, FaceEndpoint(*this->localFace4), pitEntry); },
     this->limitedIo, T::canProcessNack()));
 
   BOOST_CHECK_EQUAL(this->strategy.sendInterestHistory.size(), 0);
@@ -261,7 +261,7 @@
   pitEntry->insertOrUpdateOutRecord(*this->localFace4, *interest)->setIncomingNack(nack);
 
   BOOST_REQUIRE(this->strategy.waitForAction(
-    [&] { this->strategy.afterReceiveNack(nack, FaceEndpoint(*this->localFace4, 0), pitEntry); },
+    [&] { this->strategy.afterReceiveNack(nack, FaceEndpoint(*this->localFace4), pitEntry); },
     this->limitedIo, T::canProcessNack()));
 
   BOOST_CHECK_EQUAL(this->strategy.sendInterestHistory.size(), 0);
diff --git a/tests/daemon/fw/unsolicited-data-policy.t.cpp b/tests/daemon/fw/unsolicited-data-policy.t.cpp
index ee5ae77..67be5b2 100644
--- a/tests/daemon/fw/unsolicited-data-policy.t.cpp
+++ b/tests/daemon/fw/unsolicited-data-policy.t.cpp
@@ -114,7 +114,7 @@
   faceTable.add(face1);
 
   auto data1 = makeData("/unsolicited-from-local");
-  forwarder.onIncomingData(*data1, FaceEndpoint(*face1, 0));
+  forwarder.onIncomingData(*data1, FaceEndpoint(*face1));
   BOOST_CHECK_EQUAL(isInCs(*data1), T::ShouldAdmitLocal::value);
 
   auto face2 = make_shared<DummyFace>("dummy://", "dummy://",
@@ -122,7 +122,7 @@
   faceTable.add(face2);
 
   auto data2 = makeData("/unsolicited-from-non-local");
-  forwarder.onIncomingData(*data2, FaceEndpoint(*face2, 0));
+  forwarder.onIncomingData(*data2, FaceEndpoint(*face2));
   BOOST_CHECK_EQUAL(isInCs(*data2), T::ShouldAdmitNonLocal::value);
 }