diff --git a/src/net/detail/network-monitor-impl-osx.cpp b/src/net/detail/network-monitor-impl-osx.cpp
new file mode 100644
index 0000000..97f3e7c
--- /dev/null
+++ b/src/net/detail/network-monitor-impl-osx.cpp
@@ -0,0 +1,453 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2017 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ *
+ *
+ * Parts of this implementation is based on daemondo command of MacPorts
+ * (https://www.macports.org/):
+ *
+ *    Copyright (c) 2005-2007 James Berry <jberry@macports.org>
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *   3. Neither the name of The MacPorts Project nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *   POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ndn-cxx-config.hpp"
+
+#include "network-monitor-impl-osx.hpp"
+#include "../../name.hpp"
+#include "../../util/logger.hpp"
+#include "../network-address.hpp"
+
+#include <ifaddrs.h>       // for getifaddrs()
+#include <arpa/inet.h>     // for inet_ntop()
+#include <netinet/in.h>    // for struct sockaddr_in{,6}
+#include <net/if_dl.h>     // for struct sockaddr_dl
+#include <net/if_types.h>  // for IFT_* constants
+
+#include <boost/asio.hpp>
+
+namespace ndn {
+namespace net {
+
+NDN_LOG_INIT(ndn.NetworkMonitor);
+
+NetworkMonitor::Impl::Impl(NetworkMonitor& nm, boost::asio::io_service& io)
+  : m_nm(nm)
+  , m_scheduler(io)
+  , m_cfLoopEvent(m_scheduler)
+  , m_context{0, this, nullptr, nullptr, nullptr}
+  , m_scStore(SCDynamicStoreCreate(nullptr, CFSTR("net.named-data.ndn-cxx.NetworkMonitor"),
+                                   &Impl::onConfigChanged, &m_context))
+  , m_loopSource(SCDynamicStoreCreateRunLoopSource(nullptr, m_scStore.get(), 0))
+  , m_nullUdpSocket(io, boost::asio::ip::udp::v4())
+
+{
+  scheduleCfLoop();
+
+  // Notifications from Darwin Notify Center:
+  //
+  // com.apple.system.config.network_change
+  //
+  CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
+                                  static_cast<void*>(this),
+                                  &Impl::afterNotificationCenterEvent,
+                                  CFSTR("com.apple.system.config.network_change"),
+                                  nullptr, // object to observe
+                                  CFNotificationSuspensionBehaviorDeliverImmediately);
+
+  io.post([this] { enumerateInterfaces(); });
+
+  CFRunLoopAddSource(CFRunLoopGetCurrent(), m_loopSource.get(), kCFRunLoopDefaultMode);
+
+  // Notifications from SystemConfiguration:
+  //
+  // State:/Network/Interface/.*/Link
+  // State:/Network/Interface/.*/IPv4
+  // State:/Network/Interface/.*/IPv6
+  // State:/Network/Global/DNS
+  // State:/Network/Global/IPv4
+  //
+  auto patterns = CFArrayCreateMutable(nullptr, 0, &kCFTypeArrayCallBacks);
+  CFArrayAppendValue(patterns, CFSTR("State:/Network/Interface/.*/Link"));
+  CFArrayAppendValue(patterns, CFSTR("State:/Network/Interface/.*/IPv4"));
+  CFArrayAppendValue(patterns, CFSTR("State:/Network/Interface/.*/IPv6"));
+  // CFArrayAppendValue(patterns, CFSTR("State:/Network/Global/DNS"));
+  // CFArrayAppendValue(patterns, CFSTR("State:/Network/Global/IPv4"));
+
+  SCDynamicStoreSetNotificationKeys(m_scStore.get(), nullptr, patterns);
+}
+
+NetworkMonitor::Impl::~Impl()
+{
+  CFRunLoopRemoveSource(CFRunLoopGetCurrent(), m_loopSource.get(), kCFRunLoopDefaultMode);
+
+  CFNotificationCenterRemoveEveryObserver(CFNotificationCenterGetDarwinNotifyCenter(),
+                                          static_cast<void*>(this));
+}
+
+shared_ptr<NetworkInterface>
+NetworkMonitor::Impl::getNetworkInterface(const std::string& ifname) const
+{
+  auto it = m_interfaces.find(ifname);
+  if (it != m_interfaces.end()) {
+    return it->second;
+  }
+  else {
+    return nullptr;
+  }
+}
+
+std::vector<shared_ptr<NetworkInterface>>
+NetworkMonitor::Impl::listNetworkInterfaces() const
+{
+  std::vector<shared_ptr<NetworkInterface>> v;
+  v.reserve(m_interfaces.size());
+
+  for (const auto& e : m_interfaces) {
+    v.push_back(e.second);
+  }
+  return v;
+}
+
+void
+NetworkMonitor::Impl::afterNotificationCenterEvent(CFNotificationCenterRef center,
+                                                   void* observer,
+                                                   CFStringRef name,
+                                                   const void* object,
+                                                   CFDictionaryRef userInfo)
+{
+  static_cast<Impl*>(observer)->m_nm.onNetworkStateChanged();
+}
+
+void
+NetworkMonitor::Impl::scheduleCfLoop()
+{
+  // poll each second for new events
+  m_cfLoopEvent = m_scheduler.scheduleEvent(time::seconds(1), bind(&Impl::pollCfLoop, this));
+}
+
+void
+NetworkMonitor::Impl::pollCfLoop()
+{
+  // this should dispatch ready events and exit
+  CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true);
+
+  scheduleCfLoop();
+}
+
+void
+NetworkMonitor::Impl::addNewInterface(const std::string& ifName)
+{
+  shared_ptr<NetworkInterface> interface(new NetworkInterface);
+
+  interface->setName(ifName);
+  interface->setState(getInterfaceState(interface->getName()));
+  updateInterfaceInfo(*interface);
+  if (interface->getType() == InterfaceType::UNKNOWN) {
+    NDN_LOG_DEBUG("ignoring " << ifName << " because it has unhandled interface type");
+    return;
+  }
+
+  NDN_LOG_DEBUG("adding interface " << interface->getName());
+  m_interfaces.insert(make_pair(interface->getName(), interface));
+  m_nm.onInterfaceAdded(interface);
+}
+
+void
+NetworkMonitor::Impl::enumerateInterfaces()
+{
+  for (const auto& ifName : getInterfaceNames()) {
+    addNewInterface(ifName);
+  }
+  m_nm.onEnumerationCompleted();
+}
+
+static std::string
+convertToStdString(CFStringRef cfString)
+{
+  const char* cStr = CFStringGetCStringPtr(cfString, kCFStringEncodingASCII);
+  if (cStr != nullptr) {
+    return cStr;
+  }
+
+  size_t stringSize =  CFStringGetLength(cfString);
+  char* buffer = new char[stringSize + 1];
+  CFStringGetCString(cfString, buffer, sizeof(buffer), kCFStringEncodingASCII);
+  std::string retval = buffer;
+  delete [] buffer;
+  return retval;
+}
+
+std::set<std::string>
+NetworkMonitor::Impl::getInterfaceNames()
+{
+  CFReleaser<CFDictionaryRef> dict = (CFDictionaryRef)SCDynamicStoreCopyValue(m_scStore.get(), CFSTR("State:/Network/Interface"));
+  CFArrayRef interfaces = (CFArrayRef)CFDictionaryGetValue(dict.get(), CFSTR("Interfaces"));
+
+  std::set<std::string> ifNames;
+  size_t count = CFArrayGetCount(interfaces);
+  for (size_t i = 0; i != count; ++i) {
+    auto ifName = (CFStringRef)CFArrayGetValueAtIndex(interfaces, i);
+    ifNames.insert(convertToStdString(ifName));
+  }
+  return ifNames;
+}
+
+InterfaceState
+NetworkMonitor::Impl::getInterfaceState(const std::string& ifName)
+{
+  CFReleaser<CFStringRef> linkName = CFStringCreateWithCString(nullptr,
+                                                               ("State:/Network/Interface/" + ifName + "/Link").c_str(),
+                                                               kCFStringEncodingASCII);
+
+  CFReleaser<CFDictionaryRef> dict = (CFDictionaryRef)SCDynamicStoreCopyValue(m_scStore.get(), linkName.get());
+  if (dict.get() == nullptr) {
+    return InterfaceState::UNKNOWN;
+  }
+
+  CFBooleanRef isActive = (CFBooleanRef)CFDictionaryGetValue(dict.get(), CFSTR("Active"));
+  if (isActive == nullptr) {
+    return InterfaceState::UNKNOWN;
+  }
+
+  return CFBooleanGetValue(isActive) ? InterfaceState::RUNNING : InterfaceState::DOWN;
+}
+
+void
+NetworkMonitor::Impl::updateInterfaceInfo(NetworkInterface& netif)
+{
+  ifaddrs* ifa_list = nullptr;
+  if (::getifaddrs(&ifa_list) < 0) {
+    BOOST_THROW_EXCEPTION(Error(std::string("getifaddrs() failed: ") + strerror(errno)));
+  }
+
+  for (ifaddrs* ifa = ifa_list; ifa != nullptr; ifa = ifa->ifa_next) {
+    if (ifa->ifa_name != netif.getName()) {
+      continue;
+    }
+
+    netif.setFlags(ifa->ifa_flags);
+    netif.setMtu(getInterfaceMtu(netif.getName()));
+
+    if (ifa->ifa_addr == nullptr)
+      continue;
+
+    NetworkAddress address;
+
+    switch (ifa->ifa_addr->sa_family) {
+      case AF_INET: {
+        address.m_family = AddressFamily::V4;
+
+        const sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(ifa->ifa_addr);
+        boost::asio::ip::address_v4::bytes_type bytes;
+        std::copy_n(reinterpret_cast<const unsigned char*>(&sin->sin_addr), bytes.size(), bytes.begin());
+        address.m_ip = boost::asio::ip::address_v4(bytes);
+
+        const sockaddr_in* sinMask = reinterpret_cast<sockaddr_in*>(ifa->ifa_netmask);
+        std::copy_n(reinterpret_cast<const unsigned char*>(&sinMask->sin_addr), bytes.size(), bytes.begin());
+        uint8_t mask = 0;
+        for (auto byte : bytes) {
+          while (byte != 0) {
+            ++mask;
+            byte <<= 1;
+          }
+        }
+        address.m_prefixLength = mask;
+        break;
+      }
+
+      case AF_INET6: {
+        address.m_family = AddressFamily::V6;
+
+        const sockaddr_in6* sin6 = reinterpret_cast<sockaddr_in6*>(ifa->ifa_addr);
+        boost::asio::ip::address_v6::bytes_type bytes;
+        std::copy_n(reinterpret_cast<const unsigned char*>(&sin6->sin6_addr), bytes.size(), bytes.begin());
+        address.m_ip = boost::asio::ip::address_v6(bytes);
+
+        const sockaddr_in6* sinMask = reinterpret_cast<sockaddr_in6*>(ifa->ifa_netmask);
+        std::copy_n(reinterpret_cast<const unsigned char*>(&sinMask->sin6_addr), bytes.size(), bytes.begin());
+        uint8_t mask = 0;
+        for (auto byte : bytes) {
+          while (byte != 0) {
+            ++mask;
+            byte <<= 1;
+          }
+        }
+        address.m_prefixLength = mask;
+        break;
+      }
+
+      case AF_LINK: {
+        const sockaddr_dl* sdl = reinterpret_cast<sockaddr_dl*>(ifa->ifa_addr);
+        netif.setIndex(sdl->sdl_index);
+        if (sdl->sdl_type == IFT_ETHER && sdl->sdl_alen == ethernet::ADDR_LEN) {
+          netif.setType(InterfaceType::ETHERNET);
+          netif.setEthernetAddress(ethernet::Address(reinterpret_cast<uint8_t*>(LLADDR(sdl))));
+          NDN_LOG_TRACE(netif.getName() << ": set Ethernet address " << netif.getEthernetAddress());
+        }
+        else if (sdl->sdl_type == IFT_LOOP) {
+          netif.setType(InterfaceType::LOOPBACK);
+        }
+        else {
+          netif.setType(InterfaceType::UNKNOWN);
+        }
+        break;
+      }
+
+      default:
+        continue;
+    }
+
+    if (netif.canBroadcast() && ifa->ifa_broadaddr != nullptr) {
+      const sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(ifa->ifa_broadaddr);
+      boost::asio::ip::address_v4::bytes_type bytes;
+      std::copy_n(reinterpret_cast<const unsigned char*>(&sin->sin_addr), bytes.size(), bytes.begin());
+      address.m_broadcast = boost::asio::ip::address_v4(bytes);
+      NDN_LOG_TRACE(netif.getName() << ": set IPv4 broadcast address " << address.m_broadcast);
+    }
+
+    if (netif.canBroadcast()) {
+      netif.setEthernetBroadcastAddress(ethernet::getBroadcastAddress());
+    }
+
+    netif.addNetworkAddress(address);
+  }
+
+  ::freeifaddrs(ifa_list);
+}
+
+size_t
+NetworkMonitor::Impl::getInterfaceMtu(const std::string& ifName)
+{
+  ifreq ifr{};
+  std::strncpy(ifr.ifr_name, ifName.c_str(), sizeof(ifr.ifr_name) - 1);
+
+  if (::ioctl(m_nullUdpSocket.native_handle(), SIOCGIFMTU, &ifr) == 0) {
+    return static_cast<size_t>(ifr.ifr_mtu);
+  }
+
+  NDN_LOG_WARN("Failed to get interface MTU: " << std::strerror(errno));
+  return ethernet::MAX_DATA_LEN;
+}
+
+void
+NetworkMonitor::Impl::onConfigChanged(SCDynamicStoreRef m_scStore, CFArrayRef changedKeys, void* context)
+{
+  static_cast<Impl*>(context)->onConfigChanged(changedKeys);
+}
+
+void
+NetworkMonitor::Impl::onConfigChanged(CFArrayRef changedKeys)
+{
+  size_t count = CFArrayGetCount(changedKeys);
+  for (size_t i = 0; i != count; ++i) {
+    std::string keyName = convertToStdString((CFStringRef)CFArrayGetValueAtIndex(changedKeys, i));
+    Name key(keyName);
+    std::string ifName = key.at(-2).toUri();
+
+    auto ifIt = m_interfaces.find(ifName);
+    if (ifIt == m_interfaces.end()) {
+      addNewInterface(ifName);
+      return;
+    }
+
+    NetworkInterface& netif = *ifIt->second;
+
+    auto removeInterface = [&] {
+      NDN_LOG_DEBUG("removing interface " << ifName);
+      shared_ptr<NetworkInterface> removedInterface = ifIt->second;
+      m_interfaces.erase(ifIt);
+      m_nm.onInterfaceRemoved(removedInterface);
+    };
+
+    if (key.at(-1).toUri() == "Link") {
+      auto newState = getInterfaceState(ifName);
+
+      if (newState == InterfaceState::UNKNOWN) {
+        // check if it is really unknown or interface removed
+        if (getInterfaceNames().count(ifName) == 0) {
+          // newState = InterfaceState::DOWN;
+          removeInterface();
+          return;
+        }
+      }
+
+      NDN_LOG_TRACE("Status of " << ifName << " changed from " << netif.getState() << " to " << newState);
+      netif.setState(newState);
+    }
+
+    if (key.at(-1).toUri() == "IPv4" || key.at(-1).toUri() == "IPv6") {
+      NetworkInterface updatedInterface;
+      updatedInterface.setName(ifName);
+      updateInterfaceInfo(updatedInterface);
+      if (updatedInterface.getType() == InterfaceType::UNKNOWN) {
+        // somehow, type of interface changed to unknown
+        NDN_LOG_DEBUG("Removing " << ifName << " because it changed to unhandled interface type");
+        removeInterface();
+        return;
+      }
+
+      const auto& newAddrs = updatedInterface.getNetworkAddresses();
+      const auto& oldAddrs = netif.getNetworkAddresses();
+
+      std::set<NetworkAddress> added;
+      std::set<NetworkAddress> removed;
+
+      std::set_difference(newAddrs.begin(), newAddrs.end(),
+                          oldAddrs.begin(), oldAddrs.end(), std::inserter(added, added.end()));
+
+      std::set_difference(oldAddrs.begin(), oldAddrs.end(),
+                          newAddrs.begin(), newAddrs.end(), std::inserter(removed, removed.end()));
+
+      for (const auto& addr : removed) {
+        netif.removeNetworkAddress(addr);
+      }
+
+      for (const auto& addr : added) {
+        netif.addNetworkAddress(addr);
+      }
+    }
+  }
+}
+
+} // namespace net
+} // namespace ndn