joinGroup() method in MulticastSocket fails under Win 98 and Win 2000 also.

Tested with the following code.

public class Mcast1 {

    public static void main(String[] arg) {

        try {
                MulticastSocket ms = new MulticastSocket();
                InetAddress iadr = InetAddress.getByName("224.0.0.1");
                ms.joinGroup(iadr);
                System.out.println("working....");
           } catch(Exception exp) {
                exp.printStackTrace();
                System.out.println("exp message: " + exp.getMessage());
           }
    }

}

Exception Message:

java.net.SocketException: set IP_MULTICAST_IF failed (code=10055)
        at java.net.PlainDatagramSocketImpl.join(Native Method)
        at java.net.MulticastSocket.joinGroup(MulticastSocket.java:282)
        at java.net.MulticastSocket.joinGroup(MulticastSocket.java:230)
        at Mcast1.main(Mcast1.java:12)
exp message: set IP_MULTICAST_IF failed (code=10055)