http://www.rfc-editor.org/rfc/rfc3769.txt
RFC 3769: Requirements for IPv6 Prefix Delegation, S. Miyakawa, R. Droms2004-06-01T23:00:00-00:00This document describes requirements for how IPv6 address prefixes should be delegated to an IPv6 subscriber's network (or "site"). This memo provides information for the Internet community.