import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.UnknownHostException;

public class ipv6 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
			new Thread(new Runnable() {

				@Override
				public void run() {
					try {
						ServerSocket so = new ServerSocket(39999, 0, InetAddress.getByName("::"));
						// ServerSocket so = new ServerSocket(39999, 0, InetAddress.getByName(null));
						// ServerSocket so = new ServerSocket(39999);
						so.accept();
					} catch (UnknownHostException e) {
						e.printStackTrace();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}}).start();
	}
}