On Thu, 18 Dec 2003 [EMAIL PROTECTED] wrote:
>       The only part of the DNS that really cares about additional
>       data are iterative resolvers.  

.. which is a pretty big part of DNS..

> They can't work unless they
>       can get the glue they need.  Every other client MUST be
>       able to cope with missing additional data.
> 
>       Iterative resolvers only care when they can't get the glue
>       address records they require.  In most cases a iterative
>       resolver can re-query for missing glue.  The only time they
>       can't do this at the momemnt is when you have a cross
>       delegation.

The main point I was trying to make is that when you get only 
*partial* additional data (e.g. only A records but not AAAA), how do 
you know that it's *partial*, not the whole truth (i.e., that you 
should go asking for AAAA records because you know you want them as 
well as the A records you got already).

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

.
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