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diff --git a/extras/vom/vom/acl_binding.hpp b/extras/vom/vom/acl_binding.hpp
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+++ b/extras/vom/vom/acl_binding.hpp
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+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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 License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __VOM_ACL_BINDING_H__
+#define __VOM_ACL_BINDING_H__
+
+#include <ostream>
+
+#include "vom/acl_list.hpp"
+#include "vom/acl_types.hpp"
+#include "vom/hw.hpp"
+#include "vom/inspect.hpp"
+#include "vom/interface.hpp"
+#include "vom/object_base.hpp"
+#include "vom/om.hpp"
+#include "vom/singular_db.hpp"
+#include "vom/singular_db_funcs.hpp"
+
+namespace VOM {
+namespace ACL {
+/**
+ * A binding between an ACL and an interface.
+ * A representation of the application of the ACL to the interface.
+ */
+template <typename LIST>
+class binding : public object_base
+{
+public:
+  /**
+   * The key for a binding is the direction and the interface
+   */
+  typedef std::pair<direction_t, interface::key_t> key_t;
+
+  /**
+   * Construct a new object matching the desried state
+   */
+  binding(const direction_t& direction, const interface& itf, const LIST& acl)
+    : m_direction(direction)
+    , m_itf(itf.singular())
+    , m_acl(acl.singular())
+    , m_binding(false)
+  {
+    m_evh.order();
+  }
+
+  /**
+   * Copy Constructor
+   */
+  binding(const binding& o)
+    : m_direction(o.m_direction)
+    , m_itf(o.m_itf)
+    , m_acl(o.m_acl)
+    , m_binding(o.m_binding)
+  {
+  }
+
+  /**
+   * Destructor
+   */
+  ~binding()
+  {
+    sweep();
+    m_db.release(std::make_pair(m_direction, m_itf->key()), this);
+  }
+
+  /**
+   * Return the 'singular instance' of the L2 config that matches this
+   * object
+   */
+  std::shared_ptr<binding> singular() const { return find_or_add(*this); }
+
+  /**
+   * convert to string format for debug purposes
+   */
+  std::string to_string() const
+  {
+    std::ostringstream s;
+    s << "acl-binding:[" << m_direction.to_string() << " " << m_itf->to_string()
+      << " " << m_acl->to_string() << " " << m_binding.to_string() << "]";
+
+    return (s.str());
+  }
+
+  /**
+   * Dump all bindings into the stream provided
+   */
+  static void dump(std::ostream& os) { m_db.dump(os); }
+
+  static dependency_t order() { return m_evh.order(); }
+
+private:
+  /**
+   * Class definition for listeners to OM events
+   */
+  class event_handler : public OM::listener, public inspect::command_handler
+  {
+  public:
+    event_handler();
+
+    virtual ~event_handler() = default;
+
+    /**
+     * Handle a populate event
+     */
+    void handle_populate(const client_db::key_t& key);
+
+    /**
+     * Handle a replay event
+     */
+    void handle_replay() { m_db.replay(); }
+
+    /**
+     * Show the object in the Singular DB
+     */
+    void show(std::ostream& os) { db_dump(m_db, os); }
+
+    /**
+     * Get the sortable Id of the listener
+     */
+    dependency_t order() const { return (dependency_t::BINDING); }
+  };
+
+  /**
+   * event_handler to register with OM
+   */
+  static event_handler m_evh;
+
+  /**
+   * Enquue commonds to the VPP command Q for the update
+   */
+  void update(const binding& obj);
+
+  /**
+   * Find or Add the instance in the DB
+   */
+  static std::shared_ptr<binding> find_or_add(const binding& temp)
+  {
+    return (m_db.find_or_add(
+      std::make_pair(temp.m_direction, temp.m_itf->key()), temp));
+  }
+
+  /*
+   * It's the OM class that calls singular()
+   */
+  friend class VOM::OM;
+
+  /**
+   * It's the singular_db class that calls replay()
+   */
+  friend class singular_db<key_t, binding>;
+
+  /**
+   * Sweep/reap the object if still stale
+   */
+  void sweep(void);
+
+  /**
+   * Replay the objects state to HW
+   */
+  void replay(void);
+
+  /**
+   * The direction the of the packets on which to apply the ACL
+   * input or output
+   */
+  const direction_t m_direction;
+
+  /**
+   * A reference counting pointer the interface that this L3 layer
+   * represents. By holding the reference here, we can guarantee that
+   * this object will outlive the interface
+   */
+  const std::shared_ptr<interface> m_itf;
+
+  /**
+   * A reference counting pointer the ACL that this
+   * interface is bound to. By holding the reference here, we can
+   * guarantee that this object will outlive the BD.
+   */
+  const std::shared_ptr<LIST> m_acl;
+
+  /**
+   * HW configuration for the binding. The bool representing the
+   * do/don't bind.
+   */
+  HW::item<bool> m_binding;
+
+  /**
+   * A map of all L2 interfaces key against the interface's handle_t
+   */
+  static singular_db<key_t, binding> m_db;
+};
+
+/**
+ * Typedef the L3 binding type
+ */
+typedef binding<l3_list> l3_binding;
+
+/**
+ * Typedef the L2 binding type
+ */
+typedef binding<l2_list> l2_binding;
+
+/**
+ * Definition of the static Singular DB for ACL bindings
+ */
+template <typename LIST>
+singular_db<typename ACL::binding<LIST>::key_t, ACL::binding<LIST>>
+  binding<LIST>::m_db;
+
+template <typename LIST>
+typename ACL::binding<LIST>::event_handler binding<LIST>::m_evh;
+
+namespace {
+const static dependency_t __attribute__((unused)) l2o = l2_binding::order();
+const static dependency_t __attribute__((unused)) l3o = l3_binding::order();
+};
+};
+
+std::ostream& operator<<(std::ostream& os,
+                         const std::pair<direction_t, interface::key_t>& key);
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */
+
+#endif