repopulating cleaned ddns zone

Shawn Routhier sar at isc.org
Fri Sep 13 01:33:15 UTC 2013


The option you want to look at is
update-optimization
in the dhcpd.conf man page.  By default
it's true and the server tries to avoid unnecessary
updates.  If you set it to false it should do what you
want.

Shawn

On Sep 12, 2013, at 5:46 PM, Brian J. Murrell wrote:

> I have a 4.1.1 dhcp server configured to update a bind9 server with ddns using:
> 
> ddns-update-style interim;
> 
> I had to reset the zone that all of the currently outstanding leases are in.  I thought that the next time a lease is updated it will just re-add the record and soon enough the zone will be repopulated.  Seems I was wrong about that.  I am guessing the dhcp server is making some kind of "I've already done that so I don't need to do it again" kind of decision based on having added a record before.
> 
> Is there any way I can force either a complete repopulation of the ddns zone from the existing leases or at least force the next renewal of each lease to re-populate the zone?
> 
> Cheers,
> b.
> 
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