Java InetAddress Check is6to4(InetAddress addr)

Description

isto

License

Open Source License

Declaration

public static boolean is6to4(InetAddress addr) 

Method Source Code

//package com.java2s;
/*/*from   w w w  .j  ava 2s.  c  o m*/
 * Created on 04-Jan-2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

import java.net.Inet6Address;
import java.net.InetAddress;

public class Main {
    public static boolean is6to4(InetAddress addr) {
        if (!(addr instanceof Inet6Address))
            return false;
        byte[] bytes = addr.getAddress();
        // check for the 2002::/16 prefix, i.e. 6to4
        return bytes[0] == 0x20 && bytes[1] == 0x02;
    }
}

Related

1. canTcpListen(InetAddress address, int port)
2. checkIPMatch(String ipTemplateList, InetAddress addr)
3. createRandomSocketAddressList( InetAddress bindAddress, int preferredPort, int minPort, int maxPort)
4. formatAddresses( List addresses)
5. getInetAddressList(NetworkInterface netInterface)
6. isAddressReachable(InetAddress address)
7. isAny(InetAddress ip)
8. isBroadcastAddress(InetAddress address)
9. IsBusy(final InetAddress remote, int port)