DNS NS Question

Kevin Darcy kcd at daimlerchrysler.com
Tue Nov 15 23:40:48 UTC 2005


Kevin Darcy wrote:

>News wrote:
>
>  
>
>>Hi,
>>
>>I have a query on how DNS resolves in regards to name servers (NS) records
>>can somebody please explain this to be by way of the following example:
>>
>>Ok so given the following setup of a domain:
>>
>>example.net.             172791  IN      NS      ns1.example.net.
>>example.net.             172791  IN      NS      ns2.example.net.
>>example.net.             172791  IN      NS      ns3.example.net.
>>
>>If I am trying to resolve host1.example.net for example.
>>
>>Does the DNS resolveer work like this.
>>
>>Try ns1.example.net if there is no host found then it tries
>>ns2.example.net and so on. So it keeps working its way down until
>>one of the NS servers says it can Resolve the query?
>>
>>    
>>
>No, "no host found" implies that one of the nameservers actually gave a 
>response to the effect that the query matched no name (or no records, 
>which is subtly different) in the DNS database. Once a response is 
>received by one of the nameservers, it is taken as definitive, since all 
>  
>
Oops, that should read "received from one of the nameservers, ...".

Sorry for the confusion.

                                                                         
      - Kevin





More information about the bind-users mailing list