http://www.rfc-editor.org/rfc/rfc4704.txt
RFC 4704: The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Client Fully Qualified Domain Name (FQDN) Option, B. Volz2006-10-01T23:00:00-00:00This document specifies a new Dynamic Host Configuration Protocol for IPv6 (DHCPv6) option that can be used to exchange information about a DHCPv6 client's Fully Qualified Domain Name (FQDN) and about responsibility for updating DNS resource records (RRs) related to the client's address assignments. [STANDARDS-TRACK]