"Yes you would know exactly, because every hex-colon monstrosity has a predictable hex-colon monstrosity derived from its hex-colon monstrosity."

If the problem wasn't obvious, the problem is that IPv6 addresses (and also MAC addresses) are not human readable. IPv4 addresses, on the other hand, are.

IPv6 adoption might be farther along if the addresses were human readable instead of eye-rolling machinations of a small subset of people who speak strictly in hexes.