RFC 1884: “IP Variation six Addressing Architecture” works by using that phrase for many bits at the conclusion of an IPv6 tackle. (The number of bits seemed to vary in a few diverse illustrations, but this identifier was ordinarily dependant on the MAC-48 deal with of a community card.) In https://devinyunev.bleepblogs.com/26658137/the-definitive-guide-to-whatsmyipv4