ok, we are have the ipv6 and ipv6-test.com says our ip. But how can I build http server on this ip?
If you have a server running, it should just use the available IPv6 & IPv4 addresses. That was certainly the case when I tried setting up a test server on my computer. Generally speaking, higher level services, such as web servers don't care about which version of IP is available. They just work.