);

    for (String validIsatapAddress : validIsatapAddresses) {
      InetAddress ip = InetAddresses.forString(validIsatapAddress);
      assertTrue(InetAddresses.isIsatapAddress((Inet6Address) ip));
      assertWithMessage("checking '%s'", validIsatapAddress)
          .that(InetAddresses.getIsatapIPv4Address((Inet6Address) ip))
          .isEqualTo(ipv4);
    }