assertThat(InetAddresses.toAddrString(InetAddresses.forString("0:0:3:0:0:0:0:ffff")))
        .isEqualTo("0:0:3::ffff");
    assertThat(InetAddresses.toAddrString(InetAddresses.forString("0:0:0:4:0:0:0:ffff")))
        .isEqualTo("::4:0:0:0:ffff");
    assertThat(InetAddresses.toAddrString(InetAddresses.forString("0:0:0:0:5:0:0:ffff")))
        .isEqualTo("::5:0:0:ffff");

          .that(Ints.tryParse(Long.toString((long) LEAST - 1, radix), radix))
          .isNull();
    }
    assertWithMessage("Hex string and dec parm").that(Ints.tryParse("FFFF", 10)).isNull();
    assertWithMessage("Mixed hex case").that(Ints.tryParse("ffFF", 16)).isEqualTo(65535);
  }

  /**
   * Encodes an integer as a string with given radix, then uses {@link Ints#tryParse(String, int)}

  }

  /**
   * Evaluates whether the argument is an "IPv4 mapped" IPv6 address.
   *
   * <p>An "IPv4 mapped" address is anything in the range ::ffff:0:0/96 (sometimes written as
   * ::ffff:0.0.0.0/96), with the last 32 bits interpreted as an IPv4 address.
   *
   * <p>For more on IPv4 mapped addresses see section 2.5.5.2 of <a target="_parent"

          .isNull();
    }
    assertWithMessage("Hex string and dec parm").that(Longs.tryParse("FFFF", 10)).isNull();
    assertWithMessage("Mixed hex case").that(Longs.tryParse("ffFF", 16)).isEqualTo(65535);
  }

  /**
   * Encodes the long as a string with given radix, then uses {@link Longs#tryParse(String, int)} to

          .that(Ints.tryParse(Long.toString((long) LEAST - 1, radix), radix))
          .isNull();
    }
    assertWithMessage("Hex string and dec parm").that(Ints.tryParse("FFFF", 10)).isNull();
    assertWithMessage("Mixed hex case").that(Ints.tryParse("ffFF", 16)).isEqualTo(65535);
  }

  /**
   * Encodes an integer as a string with given radix, then uses {@link Ints#tryParse(String, int)}

  address ranges (“CIDR blocks”).
  
  In particular, octets within IPv4 addresses are not allowed to have any leading
  `0`s, and IPv4-mapped IPv6 values (e.g. `::ffff:192.168.0.1`) are forbidden.
  These sorts of values can potentially cause security problems when different
  components interpret the same string as referring to different IP addresses
  (as in CVE-2021-29923).