I don't understand what you're asking. Read https://en.wikipedia.org/wiki/IPv6_address#IPv6_address_space https://en.wikipedia.org/wiki/IPv6_address#IPv6_addre

I don't understand what you're asking. Read https://en.wikipedia.org/wiki/IPv6_address#IPv6_address_space https://en.wikipedia.org/wiki/IPv6_address#IPv6_address_spac... and https://en.wikipedia.org/wiki/IPv6_address#Stateless_address_autoconfiguration https://en.wikipedia.org/wiki/IPv6_address#Stateless_address... . If you've more questions after reading those sections, feel free to ask.