Your comment makes no sense. No one is passing around IP addresses by hand. It sounds like you have not heard of dynamic DNS, and don't understand how P2P software works.
https://en.wikipedia.org/wiki/AAAA_record
https://en.wikipedia.org/wiki/Dynamic_DNS
https://en.wikipedia.org/wiki/Peer-to-peer
Can you please learn how basic networking works before posting on the topic of IPv6?