<div dir="ltr"><div><br></div><div><br></div><div>What is BIND internal logic when such a series of queries are received, and why it would not answer to all requests.</div><div><br></div><div>Regards,</div><div>Samer Khattab</div>
<br><br><div class="gmail_quote">On Sun, Feb 5, 2012 at 9:42 AM, Mark Andrews <span dir="ltr"><<a href="mailto:marka@isc.org">marka@isc.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
In message <CAH14rHi==V=BG4AZUGTuO0m7ruQC+WiK3hRko=<a href="mailto:Oky1LEpDf0mA@mail.gmail.com">Oky1LEpDf0mA@mail.gmail.com</a>><br>
<div><div class="h5">, Samer Khattab writes:<br>
> Hi all,<br>
><br>
> We have an observation for some queries where BIND caching server receives<br>
> multiple queries (three or four, A or AAAA) for a domain name, with the<br>
> same transaction ID in the DNS header in all query packets, and one<br>
> response packet is sent back from the server only for these queries.<br>
><br>
> The client IP,source port and Server IP is the same in these queries.<br>
><br>
> Is this the right BIND behavior in this case or it is an issue.<br>
<br>
</div></div>It is expected behavior.<br>
<br>
> Regards,<br>
> Samer Khattab<br>
<span class="HOEnZb"><font color="#888888">--<br>
Mark Andrews, ISC<br>
1 Seymour St., Dundas Valley, NSW 2117, Australia<br>
PHONE: <a href="tel:%2B61%202%209871%204742" value="+61298714742">+61 2 9871 4742</a> INTERNET: <a href="mailto:marka@isc.org">marka@isc.org</a><br>
</font></span></blockquote></div><br></div>