I think most or even all http servers and operating systems already can handle IPv6 no problem, one can set server bindings just the same as for IPv4. Hetzner

I think most or even all http servers and operating systems already can handle IPv6 no problem, one can set server bindings just the same as for IPv4. Hetzner and other providers of this size already support hosting options for IPv6. That said - my home ISP is not providing IPv6 at all, ISP we were getting office connection also provided no IPv6.