
306 Part Two • IPv6 Protocols
18.3 DNS and IPv6 Aggregation
Controversy arose from the publication of RFC 2874, “DNS Extensions
to Support IPv6 Address Aggregation and Renumbering,” as a proposal
standard. Apparently, this new specification was to have been con-
sidered an alternative to AAAA but in RFC 3363, “Representing Internet
Protocol Version 6 (IPv6) Addresses in the Domain Name System (DNS),”
the situation was clarified with the A6 proposal (as the protocol defined
in RFC 2874 is known) reclassified as experimental.
The A6 resource record solves some problems but also creates other prob-
lems as will be made clear in this section. By design, A6