<html><body><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:10pt">Sumsum--<br><br>Using the technique you document, you will need a zone for each of <br>128.100.168.192.in-addr.arpa through 190.100.168.192.in-addr.arpa<br><br>Or you might want to serve the entire class C 100.168.192.in-addr.arpa, <br>especially if you can get a feed for the zone excluding your portion.<br><br>Hope this helps,<br><br>Len<br><div><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: tahoma, new york, times, serif; font-size: 10pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font
face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> sumsum 2000 <sum2hike@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> bind-users@lists.isc.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, July 12, 2013 6:14 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: Reverse Lookups with Forwarders<br> </font> </div> <div class="y_msg_container"><br><div id="yiv9799322634"><div dir="ltr"><div><div><div><div><div>Along the same lines as that of ipv4 address: <br></div>i have the following zone file configuration for reverse lookup: <br><br></div> Goal: <a rel="nofollow" target="_blank" href="http://192.168.100.128/26">192.168.100.128/26</a> to be directed to 10.213.246.15<br>
<br></div>In this, the network part it 192.168.100.128 and <br></div>network range is 191.168.100.129 - 191.168.100.190<br><br></div>in this specific case, this is what i end up with zone file configuration:<br> zone "128.100.168.192.in-addr.arpa" IN {<br>
type forward;<br> forwarders {10.213.246.15;};<br> forward only;<br> };<br><div><div><br></div><div>In other cases, where my network is 192.168.100, the configuration is as follows and this works<br>
zone "128.100.168.192.in-addr.arpa" IN {<br> type forward;<br> forwarders {10.213.246.15;};<br> forward only;<br>
};<br><div><br></div><br></div><div><div><div> <br></div><div>When i do a dig -x 191.168.100.129 it does not go to the configured DNS. <br></div><div>Any way, i can get this to be looked up for the correct specified DNS, as there is distinction between the network and the host configuration for this specific case.<br>
<br></div><div>Could you please help on this.<br></div></div></div></div></div><div class="yiv9799322634gmail_extra"><br><br><div class="yiv9799322634gmail_quote">On Tue, Jul 9, 2013 at 1:03 PM, Matus UHLAR - fantomas <span dir="ltr"><<a rel="nofollow" ymailto="mailto:uhlar@fantomas.sk" target="_blank" href="mailto:uhlar@fantomas.sk">uhlar@fantomas.sk</a>></span> wrote:<br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="yiv9799322634im">On 09.07.13 11:51, sumsum 2000 wrote:<br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
I have a reverse lookup zone file configuration as follows:<br>
zone "0/24.110.252.173.in-addr.<u></u>arpa" {<br>
</blockquote></div>
[...]<div class="yiv9799322634im"><br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
When I do dig -x 172.252.110.27, I expect it to forward it to<br>
10.10.96.1, but instead, it uses the default resolver.<br>
</blockquote></div>
[...]<div class="yiv9799322634im"><br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
So if DNS Server X is configured against this zone<br>
, then any reverse DNS request for 173.252.110.0-173.252.110.255<br>
should be forwarded via DNS Server X<br>
</blockquote>
<br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Currently this is not the case. There is no forwarding in the above<br>
scenario ( where CIDR notation x.x.x.x/Mask is used)<br>
</blockquote>
<br></div>
Neither the BIND nor DNS does use the CIDR format.<br>
the resursive resolution searches for 27.110.252.173.in-addr.arpa which does<br>
NOT belong into 0/24.110.252.173.in-addr.arpa, they are two separate names.<br>
<br>
You would have to set up either zone 27.110.252.173.in-addr.arpa or<br>
110.252.173.in-addr.arpa. <br>
<blockquote class="yiv9799322634gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="yiv9799322634im">
Only when the zone file is changed to<br>
zone "110.252.173.in-addr.arpa" IN {<br>
<br></div><div class="yiv9799322634im">
All the requests for<br>
<br>
173.252.110.0-173.252.110.255 is forwarded to 10.10.96.1.<br>
</div></blockquote>
<br>
Use 110.252.173.in-addr.arpa then. You should be aware that the IP range<br>
belongs to facebook, as already noted.<span class="yiv9799322634HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Matus UHLAR - fantomas, <a rel="nofollow" ymailto="mailto:uhlar@fantomas.sk" target="_blank" href="mailto:uhlar@fantomas.sk">uhlar@fantomas.sk</a> ; <a rel="nofollow" target="_blank" href="http://www.fantomas.sk/">http://www.fantomas.sk/</a><br>
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