It don't even support dynamically assigned ipv6 address. And ipv6 prefix need to be hardcoded into config. And even worse , ipv6 address(not suffix) is bounded

It don't even support dynamically assigned ipv6 address. And ipv6 prefix need to be hardcoded into config. And even worse , ipv6 address(not suffix) is bounded directly to the container at creation time. If your ipv6 prefix changed for whatever reason.(laptop is a thing since 20 years ago, you know) Best you can do is scrap the container and make a new one. I would say keep it experimental at current status is a good decision. It's simply not usable currently.