Help with DDNS/DDHCP configuration required

Alex Sharaz A.Sharaz at
Mon Nov 8 16:19:05 UTC 2004

--On 08 November 2004 15:05 +0000 Simon Hobson <shobson0309 at> 

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> Alex Sharaz wrote:
>> I'm just starting to look at configuring my  Bind 9.3 server to support
>> DDNS updates.
>> I *think* I've got things configured correctly, but somethings not quite
>> right somewhere.
>> What I want to do is use omapi on the DHCP server to create a host entry
>> and have the dhcp server generate the appropriate forward and reverse
>> entries. Suppose the questions are :-
>> [for the dhcp list]  is if i use omapi to create a dhcp entry, if the
>> config is right, will it attempt a DDNS update.
> For hosts defined in dhcpd.conf, then ddns updates are not done for
> hosts with fixed addresses - I would expect that this would also be
> the case with hosts declared via omapi. In principal, there is a
> declaration (check the man pages) to make dhcpd do ddns updates for
> fixed-address clients, but it didn't seem to work for me.
> If you are managing fixed address hosts then I would suggest a
> wrapper script that takes the key details and then calls omapi to do
> the dhcp updates, and nsupdate to do dns updates.

o.k. I've already got the dhcp update bit working so it wouldn't take long 
to implement the nsupdate side of things

>> [for the bind list] with my given log configuation, I either can't see
>> the wood from the trees, there isn't an update request coming in, or the
>> logging isn't set up correctly. Is there any special logging config I
>> need to set up to see what's happening.
> BIND will log updates with the default logging settings.
o.k got this fixed, t'was a case of not seeing wood from trees. updates are 
now in their own log file.

Now all I've got to do is stop the d**n windows systems from attempting a 
DNS update all the time.


> Simon
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