[Kea-users] Where to configure lease length used by kea-dhcp-ddns

Veronique.Lefebure at cern.ch Veronique.Lefebure at cern.ch
Tue Jul 12 12:44:33 UTC 2022


Hi,
I had the same question some time ago.
See https://gitlab.isc.org/isc-projects/kea/-/issues/225#note_264521 

Cheers,
Veronique

> On 12/07/2022 14:25 Sandro <lists at penguinpee.nl> wrote:
> 
>  
> Hi,
> 
> I have setup kea-dhcp4 to hand out IP addresses and kea-dhcp-ddns to 
> update DNS (BIND). That works. But I need to tune the TTL used in the 
> updates.
> 
> In the log kea-dhcp-ddns tells me:
> 
> Lease Length: 14000
> 
> That's also the TTL value used in the zone update. However, it does not 
> correspond to either `min-valid-lifetime`, `valid-lifetime` nor 
> `max-valid-lifetime` in kea-dhcp4.conf.
> 
>  From the log kea-dhcp4 hands out leases with a lifetime of 42000s, 
> which is what I set in `valid-lifetime`:
> 
> lease 192.168.101.151 has been allocated for 42000 seconds
> 
> So, which configuration parameter in either kea-dhcp-ddns.conf or 
> kea-dhcp4.conf do I need to tune to adjust the TTL used in DDNS updates?
> 
> I searched through the manual, but failed to find a hint.
> 
> -- Sandro
> -- 
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