/// Returns true if this is a loopback address (127.0.0.0/8).
///
- /// This property is defined by [RFC 1122].
+ /// This property is defined by [IETF RFC 1122].
///
- /// [RFC 1122]: https://tools.ietf.org/html/rfc1122
+ /// [IETF RFC 1122]: https://tools.ietf.org/html/rfc1122
///
/// # Examples
///
/// Returns true if this is a private address.
///
- /// The private address ranges are defined in [RFC 1918] and include:
+ /// The private address ranges are defined in [IETF RFC 1918] and include:
///
/// - 10.0.0.0/8
/// - 172.16.0.0/12
/// - 192.168.0.0/16
///
- /// [RFC 1918]: https://tools.ietf.org/html/rfc1918
+ /// [IETF RFC 1918]: https://tools.ietf.org/html/rfc1918
///
/// # Examples
///
/// Returns true if the address is link-local (169.254.0.0/16).
///
- /// This property is defined by [RFC 3927].
+ /// This property is defined by [IETF RFC 3927].
///
- /// [RFC 3927]: https://tools.ietf.org/html/rfc3927
+ /// [IETF RFC 3927]: https://tools.ietf.org/html/rfc3927
///
/// # Examples
///
/// Returns true if this is a multicast address (224.0.0.0/4).
///
/// Multicast addresses have a most significant octet between 224 and 239,
- /// and is defined by [RFC 5771].
+ /// and is defined by [IETF RFC 5771].
///
- /// [RFC 5771]: https://tools.ietf.org/html/rfc5771
+ /// [IETF RFC 5771]: https://tools.ietf.org/html/rfc5771
///
/// # Examples
///
/// Returns true if this is a broadcast address (255.255.255.255).
///
- /// A broadcast address has all octets set to 255 as defined in [RFC 919].
+ /// A broadcast address has all octets set to 255 as defined in [IETF RFC 919].
///
- /// [RFC 919]: https://tools.ietf.org/html/rfc919
+ /// [IETF RFC 919]: https://tools.ietf.org/html/rfc919
///
/// # Examples
///
/// Returns true if this address is in a range designated for documentation.
///
- /// This is defined in [RFC 5737]:
+ /// This is defined in [IETF RFC 5737]:
///
/// - 192.0.2.0/24 (TEST-NET-1)
/// - 198.51.100.0/24 (TEST-NET-2)
/// - 203.0.113.0/24 (TEST-NET-3)
///
- /// [RFC 5737]: https://tools.ietf.org/html/rfc5737
+ /// [IETF RFC 5737]: https://tools.ietf.org/html/rfc5737
///
/// # Examples
///
/// Returns true for the special 'unspecified' address (::).
///
- /// This property is defined in [RFC 4291].
+ /// This property is defined in [IETF RFC 4291].
///
- /// [RFC 4291]: https://tools.ietf.org/html/rfc4291
+ /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
///
/// # Examples
///
/// Returns true if this is a loopback address (::1).
///
- /// This property is defined in [RFC 4291].
+ /// This property is defined in [IETF RFC 4291].
///
- /// [RFC 4291]: https://tools.ietf.org/html/rfc4291
+ /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
///
/// # Examples
///
/// Returns true if this is a unique local address (fc00::/7).
///
- /// This property is defined in [RFC 4193].
+ /// This property is defined in [IETF RFC 4193].
///
- /// [RFC 4193]: https://tools.ietf.org/html/rfc4193
+ /// [IETF RFC 4193]: https://tools.ietf.org/html/rfc4193
///
/// # Examples
///
/// Returns true if the address is unicast and link-local (fe80::/10).
///
- /// This property is defined in [RFC 4291].
+ /// This property is defined in [IETF RFC 4291].
///
- /// [RFC 4291]: https://tools.ietf.org/html/rfc4291
+ /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
///
/// # Examples
///
/// Returns true if this is an address reserved for documentation
/// (2001:db8::/32).
///
- /// This property is defined in [RFC 3849].
+ /// This property is defined in [IETF RFC 3849].
///
- /// [RFC 3849]: https://tools.ietf.org/html/rfc3849
+ /// [IETF RFC 3849]: https://tools.ietf.org/html/rfc3849
///
/// # Examples
///
/// Returns true if this is a multicast address (ff00::/8).
///
- /// This property is defined by [RFC 4291].
+ /// This property is defined by [IETF RFC 4291].
///
- /// [RFC 4291]: https://tools.ietf.org/html/rfc4291
+ /// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
/// # Examples
///
/// ```