RFC_4291
RFC 4291 is a document that defines the format and structure of IPv6 addresses, which are used in the next generation of the Internet Protocol. It specifies how these addresses are represented, including the use of hexadecimal notation and the rules for compressing long sequences of zeros.
Additionally, RFC 4291 outlines the different types of IPv6 addresses, such as unicast, multicast, and anycast. This standard is essential for ensuring that devices can communicate effectively over the Internet using IPv6, which was developed to replace the older IPv4 addressing system due to the exhaustion of available addresses.