1 /*

     2  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /* @test

    25  * @bug   6964714

    26  * @run main/othervm NetworkInterfaceV6List

    27  * @summary Test the networkinterface listing with java.net.preferIPv4Stack=true.

    28  */

    29 

    30 

    31 import java.net.*;

    32 import java.util.*;

    33 

    34 

    35 public class IPv4Only {

    36     public static void main(String[] args) throws Exception {

    37         System.setProperty("java.net.preferIPv4Stack","true");

    38 

    39         Enumeration<NetworkInterface> nifs = NetworkInterface.getNetworkInterfaces();

    40         while (nifs.hasMoreElements()) {

    41             NetworkInterface nif = nifs.nextElement();

    42             Enumeration<InetAddress> addrs = nif.getInetAddresses();

    43             while (addrs.hasMoreElements()) {

    44                InetAddress hostAddr = addrs.nextElement();

    45                if ( hostAddr instanceof Inet6Address ){

    46                     throw new RuntimeException( "NetworkInterfaceV6List failed - found v6 address " + hostAddr.getHostAddress() );

    47                }

    48             }

    49         }

    50     }

    51 }