/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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. 
 *  
 */

package org.apache.directory.server.dhcp.options.dhcp;


import org.apache.directory.server.dhcp.options.DhcpOption;


/**
 * This option is used by DHCP clients to specify their unique
 * identifier.  DHCP servers use this value to index their database of
 * address bindings.  This value is expected to be unique for all
 * clients in an administrative domain.
 * 
 * Identifiers SHOULD be treated as opaque objects by DHCP servers.
 * 
 * The client identifier MAY consist of type-value pairs similar to the
 * 'htype'/'chaddr' fields. For instance, it MAY consist
 * of a hardware type and hardware address. In this case the type field
 * SHOULD be one of the ARP hardware types defined in STD2.  A
 * hardware type of 0 (zero) should be used when the value field
 * contains an identifier other than a hardware address (e.g. a fully
 * qualified domain name).
 * 
 * For correct identification of clients, each client's client-
 * identifier MUST be unique among the client-identifiers used on the
 * subnet to which the client is attached.  Vendors and system
 * administrators are responsible for choosing client-identifiers that
 * meet this requirement for uniqueness.
 * 
 * The code for this option is 61, and its minimum length is 2.
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$, $Date$
 */
public class ClientIdentifier extends DhcpOption
{
    /*
     * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag()
     */
    public byte getTag()
    {
        return 61;
    }
}