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diff --git a/opendaylight/adsal/hosttracker/api/src/main/java/org/opendaylight/controller/hosttracker/hostAware/IHostFinder.java b/opendaylight/adsal/hosttracker/api/src/main/java/org/opendaylight/controller/hosttracker/hostAware/IHostFinder.java
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index 0000000000..abe75180cf
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+++ b/opendaylight/adsal/hosttracker/api/src/main/java/org/opendaylight/controller/hosttracker/hostAware/IHostFinder.java
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+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.controller.hosttracker.hostAware;
+
+import java.net.InetAddress;
+
+/**
+ * This Interface defines the methods to trigger the discovery of a Host and to
+ * probe if a learned Host is still in the network.
+ *
+ *
+ *
+ */
+public interface IHostFinder {
+    /**
+     * This method initiates the discovery of a host based on its IP address.
+     * This is triggered by query of an application to the HostTracker. The
+     * requested IP address doesn't exist in the local database at this point.
+     *
+     * @param networkAddress
+     *            IP Address encapsulated in InetAddress class
+     *
+     */
+    public void find(InetAddress networkAddress);
+
+    /**
+     * This method is called by HostTracker to see if a learned Host is still in
+     * the network. Used mostly for ARP Aging.
+     *
+     * @param host
+     *            The Host that needs to be probed
+     */
+    public void probe(HostNodeConnector host);
+}