IPv5 never existed as a version of the Internet Protocol. The version number "5" in the IP header was assigned to identify packets carrying an experimental, non-IP, real-time stream protocol called ST. ST was never widely used, but since the version number 5 had already been allocated the new version of IP was given its own unique identifying number, 6. ST is described in RFC 1819.
# Pourquoi 6 et pas 5?
Posté par Nadine . En réponse au journal IPv6 chez Free. Évalué à 10.