IPv6 is the acronym of "Internet Protocol Version 6". IPv6 is the Internet next generation protocol, which was firstly designated IPng, that is, "Internet Next Generation".

IPv6 is the update of data network protocol in which Internet is based on. The IETF (Internet Engineering Task Force) developed the basic specifications during 90's to substitute the actual version of Internet protocol, IP version 4 (IPv4), at last 70´s.