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<DIV><FONT face=Verdana color=#000080 size=2></FONT> </DIV>
<DIV><FONT face=Verdana color=#000080 size=2></FONT> </DIV>
<DIV><FONT face=Verdana color=#000080 size=3>Really? Maybe it is not. The
recursor receives a response with additional section from a zone and if it finds
that the nameservers in the authority section of the response belong to the
zone, it will use the glue records in the additonal section, elsewise, it
will laungh a new query about address of the nameservers.
</FONT></DIV>
<DIV><FONT face=Verdana color=#c0c0c0 size=2>2011-09-02 </FONT></DIV><FONT
face=Verdana color=#000080 size=2>
<HR style="WIDTH: 100px" align=left color=#b5c4df SIZE=1>
</FONT>
<DIV><FONT face=Verdana color=#c0c0c0
size=2><SPAN>Mingxing</SPAN> </FONT></DIV>
<HR color=#b5c4df SIZE=1>
<DIV><FONT face=Verdana size=2><STRONG>发件人：</STRONG> Doug Barton </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>发送时间：</STRONG> 2011-09-02 12:50:00
</FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>收件人：</STRONG> 风河 </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>抄送：</STRONG> bind-users </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>主题：</STRONG> Re: about the additional
section </FONT></DIV>
<DIV><FONT face=Verdana size=2></FONT> </DIV>
<DIV><FONT face=Verdana size=2>
<DIV>On 09/01/2011 21:23, 风河 wrote:</DIV>
<DIV>> i just want to make sure about it,</DIV>
<DIV></DIV>
<DIV>The rules for what is and is not included in the ADDITIONAL section are</DIV>
<DIV>not only not strict, they vary from server to server, and sometimes they</DIV>
<DIV>vary with different versions of the same server.</DIV>
<DIV></DIV>
<DIV>> and will the client resolver use the additional records directly?</DIV>
<DIV></DIV>
<DIV>Ok, now that is a question we can answer. :) Short answer is yes. The</DIV>
<DIV>longer answer is that the real answer is "usually yes," but you really</DIV>
<DIV>don't need to worry about it. The resolver will do what it's going to</DIV>
<DIV>do, in the most efficient manner possible.</DIV>
<DIV></DIV>
<DIV></DIV>
<DIV>hope this helps,</DIV>
<DIV></DIV>
<DIV>Doug</DIV>
<DIV></DIV>
<DIV>-- </DIV>
<DIV></DIV>
<DIV>Nothin' ever doesn't change, but nothin' changes much.</DIV>
<DIV>-- OK Go</DIV>
<DIV></DIV>
<DIV>Breadth of IT experience, and depth of knowledge in the DNS.</DIV>
<DIV>Yours for the right price. :) http://SupersetSolutions.com/</DIV>
<DIV></DIV>
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