Thanks for testing, in year 2026, still IPv6 is not fully well utilized homes, corporates especially it is worse at clouds (AWS, GCP) if you not limit north to south, they are not good for east-to-west compared to telco providers. For example, GCP uses IP forwarding for IPv6 real IP address is not allocated at machine. At some of the components which is EKS is not support every case at IPv6.
So IPv8 can be available around year 2300 I guess :) (i have not inspected v8 RFC yet)
IPv8 is just a reactionary response to IPv6 not being "IPv4 with larger addresses" like people who know IPv4 well would prefer.
There would be no reason to adopt it if IPv6 were adopted.