To learn more about IPv6 addressing, take a look at the following links:
- Tongue twister: The number of possible IPv6 addresses read out loud: https://royal.pingdom.com/the-number-of-possible-ipv6-addresses-read-out-loud/
- IPv6 Addressing: https://docs.microsoft.com/en-us/previous-versions/aa917150(v=msdn.10)
- Connection of IPv6 Domains via IPv4 Clouds: https://www.ietf.org/rfc/rfc3056.txt