BIND started replying to queries for .com with .COM
p.mayers at imperial.ac.uk
Fri Apr 1 11:12:39 UTC 2016
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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