> The dotted quad notation is just a human readable notation. You can’t just add another octet willy nilly. That’s exactly what ipv6 did. They added an extra 12

> The dotted quad notation is just a human readable notation. You can’t just add another octet willy nilly. That’s exactly what ipv6 did. They added an extra 12 octets, but used hex notation (0-F) to shorten the number of characters for human readability. If that's all IPv6 did that would have been one thing. ipv6 changed tons of things, from arp to nat, dhcp to dns.