>Let's say the change was for another protocol, e.g. TLS. Would the >people agree to a move from v.1.3 to v.1.2 because that is what the >outsourcing provider offers? That's not a valid comparison. TLS 1.3 offers things that TLS 1.2 doesn't, Including faster re-connection and more security and privacy (it encrypts more of the initial handshake). IPv4 works seamlessly with IPv6 and is basically "the same"
