There are various technologies that support the conversion from the Internet's IPv4 addressing to IPv6. Dual stack nodes support both IPv4 and IPv6. Following is a brief summary. See
IPv4 and
IPv6.
464XLAT
IPv6 clients access IPv4 services.
4over6
IPv6 service provider support for IPv4.
4in6
Tunnel IPv4 packets in IPv6.
6in4
Encapsulate IPv6 packets in IPv4.
6over4, ISATAP
Transmit IPv6 packets in dual-stack nodes.
6to4
IPv6 packets ride over IPv4 networks.
6rd
Supports rapid deployment (rd) in IPv4 ISPs.
DS-Lite
Facilitate transition from IPv4 to IPv6.
DNS64
Convert IPv4 A records in DNS to IPv6 AAAA records.
NAT64
Convert between IPv4 and IPv6.
Teredo tunneling
IPv6 hosts ride over an IPv4 network.