Web site that won't resolve

RouterOS Beginner Basics
1

What can be done to get a web site that appears to refuse to resove under IPv4 to work?

ipv6 is disabled and isn’t going to be enabled for this.

2

fix dns problem. :smiley:

  1. no site is responding - dns problem

  2. all site responding - No problem

  3. Some responding - some - or one does not. Then you need to check your and site dns. also check that its dns-ip that is not worksing. webserver can be with no response for several resionv-vbut dns is working. one way is wrong mtu

3

Is there any reason a web site would force connection to it via ipv6?

4

Maybe the owner is fan of IPv6 who was annoyed by slow adoption and decided to give it a little push by cutting off IPv4? :slight_smile:

5

I’ve heard rumours that in some parts of universe IPv4 is actually not available anymore. In such case it’s only logical to have some host name only resolvable to IPv6 address. Perhaps time has come to implement 6to4 gateways … to allow IPv4 only clients to connect to IPv6 servers …

6

Even if it’s not available anymore in some places, when you want to run publicly accessible server, you simply have to find free public IPv4 address. Even if you’d have to tunnel it from the other end of the world, you must get some. The reason can be seen e.g. at https://www.google.com/intl/en/ipv6/statistics.html. You can’t have public service unreachable for 80% users. And depending on where the users are from, it can be even worse.

It’s too late for 6to4. I liked it very much, but it didn’t catch on and is actually deprecated already. Not the whole thing, but the anycast gateway for it. Which is the same thing for 6to4 as magic solution that just works. I still think it was great idea. Unfortunately, almost nobody bothered to run 6to4 gateways, so it had to fail.