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diff --git a/src/lib/dhcpsrv/cb_ctl_dhcp.h b/src/lib/dhcpsrv/cb_ctl_dhcp.h
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+++ b/src/lib/dhcpsrv/cb_ctl_dhcp.h
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+// Copyright (C) 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 CB_CTL_DHCP_H
+#define CB_CTL_DHCP_H
+
+#include <cc/stamped_value.h>
+#include <process/cb_ctl_base.h>
+#include <dhcpsrv/srv_config.h>
+
+namespace isc {
+namespace dhcp {
+
+/// @brief Base class for implementing mechanisms to control the use
+/// of the Configuration Backends by DHCPv4 and DHCPv6 servers.
+///
+/// It includes common methods used by the DHCPv4 and DHCPv6 specific
+/// derivations.
+///
+/// @tparam ConfigBackendMgrType Type of the Config Backend Manager used
+/// by the server implementing this class. For example, for the DHCPv4
+/// server it will be @c ConfigBackendDHCPv4Mgr.
+template<typename ConfigBackendMgrType>
+class CBControlDHCP : public process::CBControlBase<ConfigBackendMgrType> {
+public:
+
+    /// @brief Constructor.
+    CBControlDHCP()
+        : process::CBControlBase<ConfigBackendMgrType>() {
+    }
+
+protected:
+
+    /// @brief Adds globals fetched from config backend(s) to a SrvConfig instance
+    ///
+    /// Iterates over the given collection of global parameters and adds them to the
+    /// given configuration's list of configured globals.
+    ///
+    /// @param external_cfg SrvConfig instance to update
+    /// @param cb_globals collection of global parameters supplied by configuration
+    /// backend
+    void addGlobalsToConfig(SrvConfigPtr external_cfg,
+                            data::StampedValueCollection& cb_globals) const {
+        const auto& index = cb_globals.get<data::StampedValueNameIndexTag>();
+        for (auto cb_global = index.begin(); cb_global != index.end(); ++cb_global) {
+
+            if ((*cb_global)->amNull()) {
+                continue;
+            }
+
+            external_cfg->addConfiguredGlobal((*cb_global)->getName(), 
+                                              (*cb_global)->getElementValue());
+        }
+    }
+};
+
+} // end of namespace isc::dhcp
+} // end of namespace isc
+
+#endif // CB_CTL_DHCP_H