<div dir="ltr"><div>Thank you. I tried your solution.</div><div><br></div>It does not resolv an issue. Reverse zone update not occurs, until the client is configured with fqdn.fqdn</div><div class="gmail_extra"><br><div class="gmail_quote">2016-05-19 22:40 GMT+03:00 Bill Shirley <span dir="ltr"><<a href="mailto:Bill@henagar.polymerindustries.biz" target="_blank">Bill@henagar.polymerindustries.biz</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
Maybe:<br>
<font color="#993300"><tt>group {</tt><tt><br>
</tt><tt> use-host-decl-names on;<br>
option fqdn.fqdn = concat(config-option
server.ddns-hostname, ".", config-option
server.ddns-domainname);</tt><span class=""><tt><br>
</tt><tt><br>
</tt><tt> host client { </tt><tt><br>
</tt><tt> hardware ethernet: 08:00:27:d8:78:e5</tt><tt><br>
</tt></span><tt> fixed-address client</tt></font><font color="#993300"><tt>.example.lab;</tt><tt><br>
</tt><tt> }</tt><tt><br>
</tt><tt> host server { </tt><tt><br>
</tt><tt> hardware ethernet: xx:xx:xx:xx:xx:xx</tt><tt><br>
</tt><tt> fixed-address </tt></font><font color="#993300"><tt><font color="#993300"><tt>server</tt></font></tt></font><font color="#993300"><tt><font color="#993300"><tt>.example.lab</tt></font>;</tt><tt><br>
</tt><tt> }</tt><tt><br>
</tt><tt>}</tt><tt><br>
</tt></font><br>
Bill<div><div class="h5"><br>
<br>
<div>On 5/18/2016 9:27 AM, Vladimir Skubriev
wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div class="h5">
<div dir="ltr">How to configure isc-dhcpd-server to update reverse
zone without client pre configuration?<br>
<br>
I'm trying to set up isc-dhcpd-server from ubuntu 16.04
(4.3.3-5ubuntu12) to configuring heterogeneous network with
ubuntu, windows, macos, other ip devices.<br>
<br>
I'm already setuped bind to store ip address configuration of
statically configured hosts in dns. My internal zone already has
an A records like:<br>
<br>
client.example.lab a 900 192.168.1.10<br>
server.example.lab a 900 192.168.1.11<br>
<br>
Also I have statically defined hosts on dhcpd.conf like:<br>
<br>
host client { <br>
hardware ethernet: 08:00:27:d8:78:e5<br>
fixed-address client;<br>
}<br>
<br>
I don't want to update A records in my internal zone example.lab
dynamically. Because this setup requires sustained attention to
clean up zones because of update errors like 'YXDOMAIN, NXRRSET
etc'<br>
<br>
I want to update dynamically only reverse zone of my internal
subnet <a href="http://192.168.1.0/24" target="_blank">192.168.1.0/24</a><br>
<br>
So I configured the dhcpd server as follows:<br>
<br>
ddns-updates on;<br>
do-forward-updates off;<br>
<br>
The documentation states that:<br>
<br>
do-forward-updates flag;<br>
<br>
...<br>
<br>
If this statement is used to disable forward updates, the DHCP
server will never attempt to update the client's A record, and
will only ever attempt to update the client's PTR record if the
client supplies an FQDN that should be placed in the PTR record
using the fqdn option.<br>
<br>
I tried to setup this option manually on ubuntu in
/etc/dhcp/dhclient.conf as follows:<br>
<br>
send fqdn.fqdn = "client.example.lab"<br>
<br>
In this case dhcpd server succesfully updates reverse PTR zone
with this fqdn name. Also it is point the obtained ip to this
fqdn name.<br>
<br>
But this workflow assumes that I need to configure each client
in the net.<br>
<br>
Is there another way to configure isc-dhcp-server for retrive
fqdn.fqdn from the server itself, without client
pre-configuration?<br>
<br>
Is it is impossible now with isc-dhcp-server ?<br>
<br>
<br>
<br>
--<br>
Faithfully yours,<br>
<br>
CVision Lab System Administrator<br>
Vladimir Skubriev</div>
<br>
<fieldset></fieldset>
<br>
</div></div><pre>_______________________________________________
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</blockquote>
<br>
</div>
<br>_______________________________________________<br>
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<a href="https://lists.isc.org/mailman/listinfo/dhcp-users" rel="noreferrer" target="_blank">https://lists.isc.org/mailman/listinfo/dhcp-users</a><br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div>Faithfully yours,<br></div><div><br></div><div>CVision Lab System Administrator</div><div>Vladimir Skubriev</div><div><br></div></div></div>
</div>