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diff --git a/src/lib/dhcpsrv/cfg_rsoo.h b/src/lib/dhcpsrv/cfg_rsoo.h
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+++ b/src/lib/dhcpsrv/cfg_rsoo.h
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+// Copyright (C) 2015,2017 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 CFG_RSOO_H
+#define CFG_RSOO_H
+
+#include <cc/cfg_to_element.h>
+#include <boost/shared_ptr.hpp>
+#include <stdint.h>
+#include <set>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Represents configuration of the RSOO options for the DHCP server.
+///
+/// This class holds the set of RSOO-enabled options (see RFC6422). The list
+/// of RSOO-enabled options is maintained by IANA and currently the option
+/// 65 is officially RSSO-enabled. The list may be extended in the future
+/// and this class allows for specifying any future RSOO-enabled options.
+/// The administrator may also use existing options as RSOO-enabled.
+class CfgRSOO : public isc::data::CfgToElement {
+public:
+
+    /// @brief Constructor.
+    ///
+    /// It adds the default (officially) RSOO-enabled options:
+    /// - OPTION_ERP_LOCAL_DOMAIN_NAME
+    CfgRSOO();
+
+    /// @brief Removes designation of all options as RSOO_enabled.
+    ///
+    /// This method removes all designations of all options as being RSOO-enabled.
+    void clear();
+
+    /// @brief Returns whether specific option code is RSOO-enabled.
+    ///
+    /// @param code Option code to check
+    /// @return true, if it is allowed in Relay-Supplied Options option
+    bool enabled(const uint16_t code) const;
+
+    /// @brief Marks specified option code as RSOO-enabled.
+    ///
+    /// @param code option to be enabled in RSOO
+    void enable(const uint16_t code);
+
+    /// @brief Unparse a configuration object
+    ///
+    /// @return a pointer to unparsed configuration
+    virtual isc::data::ElementPtr toElement() const;
+
+private:
+
+    /// @brief Contains a set of options that are allowed in RSOO option
+    ///
+    /// RSOO stands for Relay-Supplied Options option. This is an option that
+    /// is inserted by the relay agent with the intention that the server will
+    /// echo those options back to the client. Only those options marked as
+    /// RSOO-enabled may appear in the RSOO. Currently only option 65 is marked
+    /// as such, but more options may be added in the future. See RFC6422 for details.
+    std::set<uint16_t> rsoo_options_;
+
+};
+
+/// @name Pointers to the @c CfgRSOO objects.
+//@{
+/// @brief Pointer to the Non-const object.
+typedef boost::shared_ptr<CfgRSOO> CfgRSOOPtr;
+
+/// @brief Pointer to the const object.
+typedef boost::shared_ptr<const CfgRSOO> ConstCfgRSOOPtr;
+
+//@}
+
+}
+}
+
+#endif // CFG_RSOO_H