/*

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

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

 *

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

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

 * published by the Free Software Foundation.

 *

 * This code 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

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

 * accompanied this code).

 *

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

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

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

 *

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

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 */

/* @test

 * @bug   6964714

 * @run main/othervm NetworkInterfaceV6List

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

 */

import java.net.*;

import java.util.*;

public class IPv4Only {

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

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

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

        while (nifs.hasMoreElements()) {

            NetworkInterface nif = nifs.nextElement();

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

            while (addrs.hasMoreElements()) {

               InetAddress hostAddr = addrs.nextElement();

               if ( hostAddr instanceof Inet6Address ){

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

               }

            }

        }

    }

}