IPv6/DNS64について、ここに記述してください。

IPv6接続だけのホストからIPv4接続だけのサーバにアクセスするためのアイデア

https://tools.ietf.org/html/draft-ietf-behave-dns64-11 

DNS64: DNS extensions for Network Address Translation from IPv6 Clients
                            to IPv4 Servers
                       draft-ietf-behave-dns64-11

Abstract 

   DNS64 is a mechanism for synthesizing AAAA records from A records.
   DNS64 is used with an IPv6/IPv4 translator to enable client-server
   communication between an IPv6-only client and an IPv4-only server,
   without requiring any changes to either the IPv6 or the IPv4 node,
   for the class of applications that work through NATs.  This document
   specifies DNS64, and provides suggestions on how it should be
   deployed in conjunction with IPv6/IPv4 translators.