By default, only the IPv6 address ending in ::1 is available for use.
Additional IPv6 addresses can be added by creating rDNS entries. Once the rDNS entry has been created, the selected IPv6 address will be routed and can be used on the server.
You can choose the IPv6 addresses yourself. The only requirement is that they must belong to your assigned IPv6 range.
A maximum of 10 IPv6 addresses can be added this way.