diff --git a/openflow_input/bsn_pktin_dedup b/openflow_input/bsn_pktin_dedup
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+// Copyright 2013, Big Switch Networks, Inc.
+//
+// LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with
+// the following special exception:
+//
+// LOXI Exception
+//
+// As a special exception to the terms of the EPL, you may distribute libraries
+// generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided
+// that copyright and licensing notices generated by LoxiGen are not altered or removed
+// from the LoxiGen Libraries and the notice provided below is (i) included in
+// the LoxiGen Libraries, if distributed in source code form and (ii) included in any
+// documentation for the LoxiGen Libraries, if distributed in binary form.
+//
+// Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler."
+//
+// You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain
+// a copy of the EPL at:
+//
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// EPL for the specific language governing permissions and limitations
+// under the EPL.
+
+#version any
+
+// This extension enables the switch to send only one packet-in for a given flow.
+// The goal is to reduce the load on the controller, particularly in the case of
+// large UDP streams.
+//
+// When this extension is enabled (by sending the BSN_SET_DEDUPLICATION message
+// described below with enabled=1) the switch will install an exact-match drop
+// flow for each packet-in. This flow has the idle_timeout, hard_timeout,
+// priority, and cookie fields set to the values given in the
+// BSN_SET_DEDUPLICATION message.
+//
+// This extension does not affect packet-ins caused by an output to
+// OFPP_CONTROLLER.
+//
+// When this extension is enabled the switch may still send multiple packet-ins
+// for the same flow.
+//
+// This extension keeps its configuration across controller disconnects. When a
+// controller that is aware of this extension connects to a switch it should send
+// a DELETE flow-mod with the cookie field set to ensure that it receives
+// packet-ins for ongoing flows.
+//
+// The flows installed by this extension are not automatically deleted when the
+// extension is disabled. Similarly other configuration changes (cookie, etc) do
+// not affect already-installed flows.
+
+struct ofp_bsn_set_deduplication {
+    uint8_t version;
+    uint8_t type;
+    uint16_t length;
+    uint32_t xid;
+    uint32_t experimenter;    // OF_EXPERIMENTER_ID_BSN
+    uint32_t subtype;         // 11
+    uint8_t enabled;
+    uint8_t pad;
+    uint16_t idle_timeout;
+    uint16_t hard_timeout;
+    uint16_t priority;
+    uint64_t cookie;
+};