IPng - Protocol
Short for Internet Protocol next generation, a new version of the Internet Protocol (IP) currently being reviewed in IETF standards committees. The official name of IPng is IPv6, where the v6 stands for version 6. The current version of IP is version 4, so it is sometimes referred to as IPv4.
IPng is designed as an evolutionary upgrade to the Internet Protocol and will, in fact, coexist with the older IPv4 for some time. IPng is designed to allow the Internet to grow steadily, both in terms of the number of hosts connected and the total amount of data traffic transmitted.