IPv5

The Internet community uses IPv4 and has used IPv6 for a couple of years. IANA is the organization that has the worldwide responsibility of assigning numbers to everything related to the Internet, which includes versions of the IP protocol. IANA assigned version 6 to the IPng protocol in 1995 following a request by the IPng working group.

What about “IP version 5”? IPv5 is an experimental resource reservation protocol intended to provide quality of service (QoS), defined as the Internet Stream Protocol (ST). It can provide real-time transport of multimedia such as voice, video, and real-time data traffic across the Internet. This protocol is based on previous work of Jim Forgie in 1979, as documented in IETF Internet Experiment Note 199. ...

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