John Levine wrote:
Automatic renumbering involving DNS was important design goal of IPv6 with reasons.News flash: nobody used the A6 RRTYPE which was intended to support IPv6 renumbering. In 2002, RFC 3363 made A6 experimental. In 2012, RFC 6563 made A6 historic. These days we all use AAAA, and we assign static addresses to our IPv6 servers.
FYI, A6 is totally useless for automatic renumbering.
Masataka Ohta
