getImpl().setOption (SocketOptions.IP_MULTICAST_LOOP, new Boolean (disable));
getImpl().setOption (SocketOptions.IP_MULTICAST_LOOP, Boolean.valueOf(disable));
  public void setLoopbackMode(boolean disable) throws SocketException  {    if (isClosed())      throw new SocketException("socket is closed");    getImpl().setOption (SocketOptions.IP_MULTICAST_LOOP, new Boolean (disable));  }