[Kea-users] DDNS doesn't update local zone

Alessandro Vesely vesely at tana.it
Mon Nov 10 12:08:11 UTC 2025


Hi,
I recently upgraded to Devuan Excalibur, equivalent to Debian Trixie, and had 
some difficulty starting the Kea daemons. Now they're running.  However, a 
client somehow got a different IP than it had before.

The host name and PTR records still use the previous IP.

I tried to fix it by issuing dhclient -r/ dhclient.  As a result, I have 
several records showing the new IP in /var/lib/dhcp4.csv, but the DNS records 
are unchanged.

In kea-dhcp4 both enable-updates and ddns-send-updates are set to true.

In both kea-dhcp4.conf and kea-dhcp-ddns.conf I set debuglevel to 99, but, upon 
restarting, I only got the two lines

kea-dhcp4: INFO  [kea-dhcp4.commands.140267918301120] COMMAND_RECEIVED Received 
command 'config-set'

and

kea-dhcp-ddns: INFO  [kea-dhcp-ddns.dctl.140298412311744] DCTL_STARTING 
DhcpDdns starting, pid: 17117, version: 2.6.3 (stable)



Dhcp releases and subsequent discover, offer, request and ack are not logged.


Is there a way to force the DNS to sync?


Best
Ale
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