Why do IPv6 unique local addresses have to have a /48 prefix?
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According to RFC 4193, unique local addresses will always have a prefix of FD00::/8 .. but according to Wikipedia: The block fd00::/8 is defined for /48 prefixes, formed by setting the forty least-significant bits of the prefix to a randomly generated bit string. Is this enforced, and if so why? What stops me from having a prefix of /32 or /16 etc?
ip network ipv6 protocol-theory networking
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Ron Maupin ♦
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