[dns-operations] How does resolver query works

Edward Lewis Ed.Lewis at neustar.biz
Wed Mar 10 15:04:08 UTC 2010

At 15:37 +0100 3/10/10, Stephane Bortzmeyer wrote:
>On Wed, Mar 10, 2010 at 03:31:10PM +0100, Marco Schrieck wrote:
>>  I think it depends on the implementation.
>IMHO, no. RFC 1035 (section 7.2) clearly said that the list of name
>servers for a domain, in the resolver's memory, is a list of
>*addresses*, not of names.

It probably does depend on the implementation, no matter what words 
in a specification say.  A lot of older code probably incorrectly 
used gethostbyname and hardcoded "hp->h_addr_list[0]" to grab just 
the first IP.
Edward Lewis
NeuStar                    You can leave a voice message at +1-571-434-5468

As with IPv6, the problem with the deployment of frictionless surfaces is
that they're not getting traction.

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