diff --git a/src/bin/dhcp4/dhcp4to6_ipc.cc b/src/bin/dhcp4/dhcp4to6_ipc.cc
index 573078cb3e58c36e347ae0c5ba59cac38217ffd0..b21920726552923e99288edbb3005d522a1c1c0c 100644
--- a/src/bin/dhcp4/dhcp4to6_ipc.cc
+++ b/src/bin/dhcp4/dhcp4to6_ipc.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2015-2016 Internet Systems Consortium, Inc. ("ISC")
+// 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
@@ -35,7 +35,7 @@ Dhcp4to6Ipc& Dhcp4to6Ipc::instance() {
 }
 
 void Dhcp4to6Ipc::open() {
-    uint32_t port = CfgMgr::instance().getStagingCfg()->getDhcp4o6Port();
+    uint16_t port = CfgMgr::instance().getStagingCfg()->getDhcp4o6Port();
     if (port == 0) {
         Dhcp4o6IpcBase::close();
         return;
@@ -45,8 +45,7 @@ void Dhcp4to6Ipc::open() {
     }
 
     int old_fd = socket_fd_;
-    socket_fd_ = Dhcp4o6IpcBase::open(static_cast<uint16_t>(port),
-                                      ENDPOINT_TYPE_V4);
+    socket_fd_ = Dhcp4o6IpcBase::open(port, ENDPOINT_TYPE_V4);
     if ((old_fd == -1) && (socket_fd_ != old_fd)) {
         IfaceMgr::instance().addExternalSocket(socket_fd_,
                                                Dhcp4to6Ipc::handler);
diff --git a/src/bin/dhcp4/json_config_parser.cc b/src/bin/dhcp4/json_config_parser.cc
index 7e49264c03d2a048129a230f7a90b39e57d85d25..1ab22bfef8bcb7fc2f03f1922b709cfe7d3a3168 100644
--- a/src/bin/dhcp4/json_config_parser.cc
+++ b/src/bin/dhcp4/json_config_parser.cc
@@ -339,8 +339,7 @@ public:
         cfg->setDeclinePeriod(probation_period);
 
         // Set the DHCPv4-over-DHCPv6 interserver port.
-        // @todo Change for uint16_t
-        uint32_t dhcp4o6_port = getUint32(global, "dhcp4o6-port");
+        uint16_t dhcp4o6_port = getUint16(global, "dhcp4o6-port");
         cfg->setDhcp4o6Port(dhcp4o6_port);
     }
 
@@ -357,6 +356,18 @@ private:
                        const std::string& name) {
         return (getIntType<uint32_t>(scope, name));
     }
+
+    /// @brief Returns a value converted to uint16_t
+    ///
+    /// Instantiation of getIntType() to uint16_t
+    ///
+    /// @param scope specified parameter will be extracted from this scope
+    /// @param name name of the parameter
+    /// @return an uint16_t value
+    uint16_t getUint16(isc::data::ConstElementPtr scope,
+                       const std::string& name) {
+        return (getIntType<uint16_t>(scope, name));
+    }
 };
 
 } // anonymous namespace
diff --git a/src/bin/dhcp6/dhcp6to4_ipc.cc b/src/bin/dhcp6/dhcp6to4_ipc.cc
index 72001a4f87ed7114edbb02607e54b455b55348a0..7ec9397973e7216ff87bd7ff24f849868532f347 100644
--- a/src/bin/dhcp6/dhcp6to4_ipc.cc
+++ b/src/bin/dhcp6/dhcp6to4_ipc.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2015-2016 Internet Systems Consortium, Inc. ("ISC")
+// 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
@@ -34,7 +34,7 @@ Dhcp6to4Ipc& Dhcp6to4Ipc::instance() {
 }
 
 void Dhcp6to4Ipc::open() {
-    uint32_t port = CfgMgr::instance().getStagingCfg()->getDhcp4o6Port();
+    uint16_t port = CfgMgr::instance().getStagingCfg()->getDhcp4o6Port();
     if (port == 0) {
         Dhcp4o6IpcBase::close();
         return;
@@ -44,8 +44,7 @@ void Dhcp6to4Ipc::open() {
     }
 
     int old_fd = socket_fd_;
-    socket_fd_ = Dhcp4o6IpcBase::open(static_cast<uint16_t>(port),
-                                      ENDPOINT_TYPE_V6);
+    socket_fd_ = Dhcp4o6IpcBase::open(port, ENDPOINT_TYPE_V6);
     if ((old_fd == -1) && (socket_fd_ != old_fd)) {
         IfaceMgr::instance().addExternalSocket(socket_fd_,
                                                Dhcp6to4Ipc::handler);
diff --git a/src/bin/dhcp6/json_config_parser.cc b/src/bin/dhcp6/json_config_parser.cc
index d34260ce9552ade56cf23b3906d77ae32cdafee3..3521174b3e1e354c31d4c1c1512c3e51743bc637 100644
--- a/src/bin/dhcp6/json_config_parser.cc
+++ b/src/bin/dhcp6/json_config_parser.cc
@@ -545,8 +545,7 @@ public:
         srv_config->setDeclinePeriod(probation_period);
 
         // Set the DHCPv4-over-DHCPv6 interserver port.
-        // @todo Change for uint16_t
-        uint32_t dhcp4o6_port = getUint32(global, "dhcp4o6-port");
+        uint16_t dhcp4o6_port = getUint16(global, "dhcp4o6-port");
         srv_config->setDhcp4o6Port(dhcp4o6_port);
     }
 
@@ -563,6 +562,18 @@ private:
                        const std::string& name) {
         return (getIntType<uint32_t>(scope, name));
     }
+
+    /// @brief Returns a value converted to uint16_t
+    ///
+    /// Instantiation of getIntType() to uint16_t
+    ///
+    /// @param scope specified parameter will be extracted from this scope
+    /// @param name name of the parameter
+    /// @return an uint16_t value
+    uint16_t getUint16(isc::data::ConstElementPtr scope,
+                       const std::string& name) {
+        return (getIntType<uint16_t>(scope, name));
+    }
 };
 
 } // anonymous namespace
diff --git a/src/lib/dhcpsrv/srv_config.h b/src/lib/dhcpsrv/srv_config.h
index dcf91049841fa77d71879b2c278cec1fcde9055c..f70b4dc93211332dee5f4415e1667e607bea0773 100644
--- a/src/lib/dhcpsrv/srv_config.h
+++ b/src/lib/dhcpsrv/srv_config.h
@@ -476,7 +476,7 @@ public:
     /// this socket is bound and connected to this port and port + 1
     ///
     /// @param port port and port + 1 to use
-    void setDhcp4o6Port(uint32_t port) {
+    void setDhcp4o6Port(uint16_t port) {
         /// @todo: Port is supposed to be uint16_t, not uint32_t
         dhcp4o6_port_ = port;
     }
@@ -485,7 +485,7 @@ public:
     ///
     /// See @ref setDhcp4o6Port for brief discussion.
     /// @return value of DHCP4o6 IPC port
-    uint32_t getDhcp4o6Port() {
+    uint16_t getDhcp4o6Port() {
         return (dhcp4o6_port_);
     }
 
@@ -587,7 +587,7 @@ private:
     ///
     /// DHCPv4-over-DHCPv6 uses a UDP socket for interserver communication,
     /// this socket is bound and connected to this port and port + 1
-    uint32_t dhcp4o6_port_;
+    uint16_t dhcp4o6_port_;
 
     D2ClientConfigPtr d2_client_config_;
 };