Control panel;s etc not of interest. Just clarify i am only interested in how this looks from the outside world.
i.e. is ipv6 a real replacement and you now lookup/ping the ipv6 address, there is no ipv4 behind it?. does anyone have a site hosted in ipv6 i can lookup?
ipv6.google.com is hosted on IPv6. For now a site hosted only on IPv6 (and no IPv4) would have very limited reachability - because most users don't have IPv6 access on their computers so they wouldn't be able to see a site that only has IPv6.
Users who are still behind IPv4 only will need a tunnel broker to reach your site in that case. While most ISPs should have ipv6 enabled by now, people like me who are behind a IPv4 only router after it gets into my house will get nothing going to your site.
In terms of 'how does it look' to the outside world. As long as 'the outside world' can connect to your site, it looks exactly the same. Being able to connect to your site depends on if they understand the addressing system you use to address your site on the internet.
IPv4 and v6 are just addressing systems. Right now, most visitors and search engines only know how to find things using IPv4. That will change in the very near future as yes, IPv6 is a very realistic replacement for IPv4.
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