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diff --git a/src/bin/dhcp6/dhcp6to4_ipc.h b/src/bin/dhcp6/dhcp6to4_ipc.h
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+++ b/src/bin/dhcp6/dhcp6to4_ipc.h
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+// Copyright (C) 2015-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef DHCP6TO4_IPC_H
+#define DHCP6TO4_IPC_H
+
+/// @file dhcp6to4_ipc.h Defines the Dhcp6to4Ipc class.
+/// This file defines the class Kea uses to act as the DHCPv6 server
+/// side of DHCPv4-over-DHCPv6 communication between servers.
+///
+#include <dhcpsrv/dhcp4o6_ipc.h>
+#include <boost/shared_ptr.hpp>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Handles DHCPv4-over-DHCPv6 IPC on the DHCPv6 server side
+class Dhcp6to4Ipc : public Dhcp4o6IpcBase {
+protected:
+    /// @brief Constructor
+    ///
+    /// Default constructor
+    Dhcp6to4Ipc();
+
+    /// @brief Destructor.
+    virtual ~Dhcp6to4Ipc() { }
+
+public:
+    /// @brief Returns pointer to the sole instance of Dhcp6to4Ipc
+    ///
+    /// Dhcp6to4Ipc is a singleton class
+    ///
+    /// @return the only existing instance of DHCP4o6 IPC
+    static Dhcp6to4Ipc& instance();
+
+    /// @brief Open communication socket
+    ///
+    /// Call base open method and sets the handler/callback when needed
+    virtual void open();
+
+    /// @brief On receive handler
+    ///
+    /// The handler sends the DHCPv6 packet back to the remote address
+    static void handler(int /* fd */);
+
+    /// @param client_port UDP port where all responses are sent to.
+    /// Not zero is mostly useful for testing purposes.
+    static uint16_t client_port;
+};
+
+} // namespace isc
+} // namespace dhcp
+
+#endif