IllegalArgumentException.class,
          () -> InetAddresses.forString(bogusInput));
      assertFalse(InetAddresses.isInetAddress(bogusInput));
    }
  }

  public void test3ff31() {
    assertThrows(IllegalArgumentException.class, () -> InetAddresses.forString("3ffe:::1"));
    assertFalse(InetAddresses.isInetAddress("016.016.016.016"));
  }