On 01/04/16 11:52, Niall O'Reilly wrote:

If you are going to pick a single authority for a particular label, it
should be the zone that determines whether that label exists or not.

   That seems no less arbitrary a rule of thumb than one which would
   give priority to the zone which contains the authoritative NS records.

In a normal recursive resolution of www.example.com, it's worth noting that only the root servers actually return "com.", in the authority section of the referral. The .com servers return "example.com."

What should happen if the following query sequence happens:

www.example.COM -> root => com.        NS a.gtld-servers.net
www.example.COM -> TLD  => example.COM NS ns.example.COM

Who is right here? The root with ".com" or the TLD with ".COM" as part of a longer label?


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