.isEqualTo(InetAddresses.forString("127.0.0.1"));

    // ::1 special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::1")))
        .isEqualTo(InetAddresses.forString("127.0.0.1"));

    // :: special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::")))
        .isEqualTo(InetAddresses.forString("0.0.0.0"));

        .isEqualTo(InetAddresses.forString("127.0.0.1"));

    // ::1 special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::1")))
        .isEqualTo(InetAddresses.forString("127.0.0.1"));

    // :: special case
    assertThat(InetAddresses.getCoercedIPv4Address(InetAddresses.forString("::")))
        .isEqualTo(InetAddresses.forString("0.0.0.0"));

    // use InetAddresses.toUriString to convert the result to a string in
    // canonical form.
    InetAddress addr = null;
    try {
      addr = InetAddresses.forString(host);
    } catch (IllegalArgumentException e) {
      // It is not an IPv4 or IPv6 literal
    }

    if (addr != null) {
      return new HostSpecifier(InetAddresses.toUriString(addr));
    }

  private static final CharMatcher IPV6_DELIMITER_MATCHER = CharMatcher.is(IPV6_DELIMITER);
  private static final Inet4Address LOOPBACK4 = (Inet4Address) forString("127.0.0.1");
  private static final Inet4Address ANY4 = (Inet4Address) forString("0.0.0.0");

  private InetAddresses() {}

  /**
   * Returns an {@link Inet4Address}, given a byte array representation of the IPv4 address.
   *

   *
   * <p>Note that this parser identifies IPv6 literals solely based on the presence of a colon. To
   * perform actual validation of IP addresses, see the {@link InetAddresses#forString(String)}
   * method.
   *
   * @return {@code this}, to enable chaining of calls.
   * @throws IllegalArgumentException if bracketless IPv6 is detected.
   */
  @CanIgnoreReturnValue