[Kea-users] lease state, cltt, and valid-lft

[Darren Ankney]

Hi Diogo,

A couple of questions:
* do all of your expired leases have state 0 or do some have state 2?
* have you observed this behavior in dhcp4?

My understanding is that once the lease is reclaimed (sometime after
cltt+valid-lifetime+reclaim-timer-wait-time) but before
cltt+valid-lifetime+hold-reclaimed-time, these should be in state 2.
After that last time period, they should be deleted.

Thank you,
Darren Ankney

On Wed, Jan 21, 2026 at 3:57 AM Diogo André de Assumpção via Kea-users
<kea-users at lists.isc.org> wrote:
>
> Hi all,
>
> I'm trying to understand these results from the lease6-get command. Particularly, why the "state" is "0" (assigned) if the cltt + valid-lft is well in the past? Any relation to the LFC process?
>
> My logs show a couple of "ALLOC_ENGINE_V6_LEASES_RECLAMATION_SLOW" events, but all before the cltt in the example bellow.
>
>
> root at dhcp-server:~# echo '{ "command": "lease6-get", "arguments": { "ip-address": "2001:db8:1234:5678::1" } }' | socat UNIX:/run/kea/kea6-ctrl-socket -,ignoreeof | jq .
> {
>  "arguments": {
>    "cltt": 1768575433,
>    "duid": "00:03:00:01:aa:bb:cc:dd:ee:ff",
>    "fqdn-fwd": false,
>    "fqdn-rev": false,
>    "hostname": "",
>    "hw-address": "aa:bb:cc:dd:ee:ff",
>    "iaid": 0,
>    "ip-address": "2001:db8:1234:5678::1",
>    "preferred-lft": 28800,
>    "state": 0,
>    "subnet-id": 123456789,
>    "type": "IA_NA",
>    "user-context": {
>      "ISC": {
>        "relay-info": [
>          {
>            "hop": 0,
>            "link": "2001:db8:1234:5678::3",
>            "options": "0x0035001F00020000XXXX00000000000000000000000000000000000000000000004F0008000100000000000000",
>            "peer": "fe80::1111:2222:3333:4444",
>            "relay-id": "00020000XXXX00000000000000000000000000000000000000000000"
>          }
>        ]
>      }
>    },
>    "valid-lft": 43200
>  },
>  "result": 0,
>  "text": "IPv6 lease found."
> } The timers and reclaim numbers are:
> "expired-leases-processing": {
> "reclaim-timer-wait-time": 3600,
> "hold-reclaimed-time": 172800,
> "max-reclaim-leases": 500,
> "max-reclaim-time": 250,
> "unwarned-reclaim-cycles": 10
> },
> "valid-lifetime": 43200,
> "preferred-lifetime": 28800,
> "renew-timer": 14400,
> "rebind-timer": 23040,
> "cache-threshold": .30,
>
> Any info is appreciated.
>
> Thanks,
> Diogo
>
>
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