code: @Override
      public boolean isLoopbackAddress() {
          byte test = 0x00;
          for (int i = 0; i < 15; i++) {
              test |= ipaddress[i];
          }
          return (test == 0x00) && (ipaddress[15] == 0x01);
      }
docs: Utility routine to check if the InetAddress is a loopback address.
  
  @return a <code>boolean</code> indicating if the InetAddress is
  a loopback address; or false otherwise.
  @since 1.4