If you need to use a DNS and you want to perform NAT64
translation using
IPv6-Initiated
Communication, you must use a third-party DNS64 server or
other DNS64 solution that is set up with the Well-Known Prefix or
your NSP. When an IPv6 host attempts to access an IPv4 host or domain on
the internet, the DNS64 server queries an authoritative DNS server
for the IPv4 address mapped to that host name. The DNS server returns
an Address record (A record) to the DNS64 server containing the
IPv4 address for the host name.