Is this the behavior that you're thinking of?
http://support.microsoft.com/default.aspx?scid=kb;en-us;196500

If so, I wonder what value you would get if it were prioritized on the
networks running today?  BIND development decided it wasn't something that
belonged on the server last I checked. 

DNS is not necessarily site aware.  The clients are, and they query DNS for
the site information.  So if you ask for an address for a DC, you'll look in
your site configuration vs. relying on DNS to give it back in a particular
order IIRC.

Al 



 

-----Original Message-----
From: Ken Cornetet [mailto:[EMAIL PROTECTED] 
Sent: Thursday, April 01, 2004 4:53 PM
To: [EMAIL PROTECTED]
Subject: [ActiveDir] DNS server, A record sorting & sites OH MY!

I've read where AD DNS will sort replies to A record requests based on the
IP address of the caller. The idea being that if multiple A records exist
for a name, the first in the list will be "closest" to the caller.
Makes sense, but I've never seen any documentation on how the comparison is
done.

Does the DNS server do a simple IP subnet match (same subnet = close,
different subnet = not close)?

Or, is the DNS server site aware so that it will sort first an address in
the same site even if it's a different subnet? 
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