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
IPv6 clients access IPv4 services.
IPv6 service provider support for IPv4.
Tunnel IPv4 packets in IPv6.
Encapsulate IPv6 packets in IPv4.
Transmit IPv6 packets in dual-stack nodes.
IPv6 packets ride over IPv4 networks.
Supports rapid deployment (rd) in IPv4 ISPs.
Facilitate transition from IPv4 to IPv6.
Convert IPv4 A records in DNS to IPv6 AAAA records.
Convert between IPv4 and IPv6.
IPv6 hosts ride over an IPv4 network.