001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied. See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 *
019 */
020
021 package org.apache.directory.server.dns.io.encoder;
022
023
024 /**
025 * 2. New resource record definition and domain
026 *
027 * A record type is defined to store a host's IPv6 address. A host that
028 * has more than one IPv6 address must have more than one such record.
029 *
030 * 2.1 AAAA record type
031 *
032 * The AAAA resource record type is a record specific to the Internet
033 * class that stores a single IPv6 address.
034 *
035 * The IANA assigned value of the type is 28 (decimal).
036 *
037 * 2.2 AAAA data format
038 *
039 * A 128 bit IPv6 address is encoded in the data portion of an AAAA
040 * resource record in network byte order (high-order byte first).
041 *
042 * 2.3 AAAA query
043 *
044 * An AAAA query for a specified domain name in the Internet class
045 * returns all associated AAAA resource records in the answer section of
046 * a response.
047 *
048 * A type AAAA query does not trigger additional section processing.
049 *
050 * 2.4 Textual format of AAAA records
051 *
052 * The textual representation of the data portion of the AAAA resource
053 * record used in a master database file is the textual representation
054 * of an IPv6 address as defined in [3].
055 *
056 * 2.5 IP6.ARPA Domain
057 *
058 * A special domain is defined to look up a record given an IPv6
059 * address. The intent of this domain is to provide a way of mapping an
060 * IPv6 address to a host name, although it may be used for other
061 * purposes as well. The domain is rooted at IP6.ARPA.
062 *
063 * An IPv6 address is represented as a name in the IP6.ARPA domain by a
064 * sequence of nibbles separated by dots with the suffix ".IP6.ARPA".
065 * The sequence of nibbles is encoded in reverse order, i.e., the
066 * low-order nibble is encoded first, followed by the next low-order
067 * nibble and so on. Each nibble is represented by a hexadecimal digit.
068 * For example, the reverse lookup domain name corresponding to the
069 * address
070 *
071 * 4321:0:1:2:3:4:567:89ab
072 *
073 * would be
074 *
075 * b.a.9.8.7.6.5.0.4.0.0.0.3.0.0.0.2.0.0.0.1.0.0.0.0.0.0.0.1.2.3.4.IP6.
076 * ARPA.
077 *
078 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
079 * @version $Rev: 501160 $, $Date: 2007-01-29 21:41:33 +0200 (Mon, 29 Jan 2007) $
080 */
081 public class Inet6AddressRecordEncoder
082 {
083 }