27

All your clients would wait for a few seconds on every DNS lookup, for starters. IPv6 is not optional and modern operating systems treat it as such. A client looking for an address will look up both AAAA and A records, even if it does not seem to have any IPv6 connectivity at that exact moment. If you drop one of the queries, the client software doing the ...


1

The CNAME is set for the subdomain, not for the root domain, so if you want to query the CNAME you have to query the subdomain itself, for example: k1._domainkey.example.com.


1

I suspect your two-way trust might be the problem here. I can't think of a way to "hide" a trusted domain name even with the jiggery-pokery with CNAMEs. You may notice a different result if you use FQDNs. What happens when you try "OLD.TEST.TLD"? I'd expect that to hit the new location. Perhaps. Here's something to try: set up your CNAMEs ...


1

For your first question, I'm not sure what you're getting at. Are you saying that you don't think it's necessary to have a public DNS record for your domain? You're right, you don't, technically. The thing is, your domain namespace should be unique worldwide, and if it's subordinate to a namespace you already own, then you can be guaranteed it is unique. It ...


Only top voted, non community-wiki answers of a minimum length are eligible