diff --git a/src/util/network-monitor.cpp b/src/util/network-monitor.cpp
new file mode 100644
index 0000000..b16e473
--- /dev/null
+++ b/src/util/network-monitor.cpp
@@ -0,0 +1,182 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2015 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.hpp"
+#include "scheduler.hpp"
+#include "scheduler-scoped-event-id.hpp"
+
+#if defined(NDN_CXX_HAVE_COREFOUNDATION_COREFOUNDATION_H)
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <SystemConfiguration/SystemConfiguration.h>
+
+namespace ndn {
+namespace util {
+
+class NetworkMonitor::Impl
+{
+public:
+  Impl(boost::asio::io_service& io)
+    : scheduler(io)
+    , cfLoopEvent(scheduler)
+  {
+  }
+
+  void
+  scheduleCfLoop()
+  {
+    // poll each second for new events
+    cfLoopEvent = scheduler.scheduleEvent(time::seconds(1), bind(&Impl::pollCfLoop, this));
+  }
+
+  static void
+  afterNotificationCenterEvent(CFNotificationCenterRef center, void *observer, CFStringRef name,
+                               const void *object, CFDictionaryRef userInfo)
+  {
+    static_cast<NetworkMonitor*>(observer)->onNetworkStateChanged();
+  }
+
+private:
+
+  void
+  pollCfLoop()
+  {
+    // this should dispatch ready events and exit
+    CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true);
+    scheduleCfLoop();
+  }
+
+private:
+  Scheduler scheduler;
+  scheduler::ScopedEventId cfLoopEvent;
+};
+
+NetworkMonitor::NetworkMonitor(boost::asio::io_service& io)
+  : m_impl(new Impl(io))
+{
+  m_impl->scheduleCfLoop();
+
+  // Potentially useful System Configuration regex patterns:
+  //
+  // State:/Network/Interface/.*/Link
+  // State:/Network/Interface/.*/IPv4
+  // State:/Network/Interface/.*/IPv6
+  //
+  // State:/Network/Global/DNS
+  // State:/Network/Global/IPv4
+  //
+  // Potentially useful notifications from Darwin Notify Center:
+  //
+  // com.apple.system.config.network_change
+
+  // network change observations
+  CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
+                                  static_cast<void*>(this),
+                                  &NetworkMonitor::Impl::afterNotificationCenterEvent,
+                                  CFSTR("com.apple.system.config.network_change"),
+                                  nullptr, // object to observe
+                                  CFNotificationSuspensionBehaviorDeliverImmediately);
+}
+
+NetworkMonitor::~NetworkMonitor()
+{
+  CFNotificationCenterRemoveEveryObserver(CFNotificationCenterGetDarwinNotifyCenter(),
+                                          static_cast<void*>(this));
+}
+
+} // namespace util
+} // namespace ndn
+
+// done with defined(NDN_CXX_HAVE_COREFOUNDATION_COREFOUNDATION_H)
+#elif defined(HAVE_DBUS)
+
+namespace ndn {
+namespace util {
+
+NetworkMonitor::NetworkMonitor(boost::asio::io_service&)
+{
+  throw Error("Not implemented yet");
+}
+
+NetworkMonitor::~NetworkMonitor()
+{
+}
+
+} // namespace util
+} // namespace ndn
+
+// done with defined(HAVE_DBUS)
+#else // do not support network monitoring operations
+
+namespace ndn {
+namespace util {
+
+class NetworkMonitor::Impl
+{
+public:
+};
+
+NetworkMonitor::NetworkMonitor(boost::asio::io_service&)
+{
+  throw Error("Network monitoring is not supported on this platform");
+}
+
+NetworkMonitor::~NetworkMonitor()
+{
+}
+
+} // namespace util
+} // namespace ndn
+
+#endif // do not support network monitoring operations
diff --git a/src/util/network-monitor.hpp b/src/util/network-monitor.hpp
new file mode 100644
index 0000000..9c7dc31
--- /dev/null
+++ b/src/util/network-monitor.hpp
@@ -0,0 +1,84 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2013-2015 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.
+ */
+
+#ifndef NDN_UTIL_NETWORK_MONITOR_HPP
+#define NDN_UTIL_NETWORK_MONITOR_HPP
+
+#include "signal.hpp"
+
+#include <boost/asio/io_service.hpp>
+
+namespace ndn {
+namespace util {
+
+/**
+ * @brief Network state change monitor
+ *
+ * When network change is detected, onNetworkStateChanged signal will be fired.
+ * Monitoring is run for the lifetime of the NetworkMonitor instance.
+ *
+ * @note Implementation of this class is platform dependent and not all supported platforms
+ *       are supported:
+ *       - OS X: CFNotificationCenterAddObserver
+ *       - Linux: NetworkManager notifications through DBus IPC
+ *
+ * Network state change detection is not guaranteed to be precise and (zero or more)
+ * notifications are expected to be fired for the following events:
+ * - any network interface going up or down
+ * - IPv4 or IPv6 address changes on any of the interfaces
+ */
+class NetworkMonitor : boost::noncopyable
+{
+public:
+  class Error : public std::runtime_error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : std::runtime_error(what)
+    {
+    }
+  };
+
+  /**
+   * @brief Construct instance and start monitoring for network state changes
+   * @param io io_service thread that will dispatch events
+   * @throw Error when network monitoring is not supported or there is an error starting monitoring
+   */
+  explicit
+  NetworkMonitor(boost::asio::io_service& io);
+
+  /**
+   * @brief Terminate network state monitoring
+   */
+  ~NetworkMonitor();
+
+  Signal<NetworkMonitor> onNetworkStateChanged;
+
+private:
+  class Impl;
+  std::unique_ptr<Impl> m_impl;
+};
+
+} // namespace util
+} // namespace autoconfig
+
+#endif // NDN_UTIL_NETWORK_MONITOR_HPP