[Kea-users] ddns rev. zones and required client class

[Peter Davies]

Hi Christian,
  DNS updates are performed by the kea-dhcp-ddns (aka d2) process on receipt a "Name Change Request" (NCR).
You would need to change the ip address in the NCR sent from Kea to enable sort of behaviour.
The behavioral parameters for ddns in kea-dhcp4 configuration are:
• ddns-send-updates
• ddns-override-no-update
• ddns-override-client-update
• ddns-replace-client-name
• ddns-generated-prefix
• ddns-qualifying-suffix
• ddns-update-on-renew
• ddns-use-conflict-resolution
• hostname-char-set
• hostname-char-replacement

There does not appear to be a parameter that could be used to change the IP address in an NCR.

Kind Regards Peter



________________________________
From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of BÖSCH Christian <boesch at fhv.at>
Sent: 02 November 2021 14:54
To: kea-users at lists.isc.org <kea-users at lists.isc.org>
Subject: [Kea-users] ddns rev. zones and required client class


Hi,



I want to migrate from isc to kea and I've kea 2.0 installed. I have 2 questions about this:



1.

I have consolidated the ddns rev. zones and have set in isc's config:

  ddns-rev-domainname "128-191.21.172.in-addr.arpa.";

Is there not this option in kea to explicit specify a custom rev. zone?



2.

I'm trying that only hosts with reservations get a lease and have configured the following below.

One way with all known clients, and the other with the assigned client-class to the reservation.

But if I test in both cases with a client without reservation it also gets an IP address.

Am I doing something wrong here?



....

"reservations": [

  {

    "hw-address": "11:22:33:44:55:66",

    "client-classes": [ "reservation" ],

    "hostname": "test-host"

  }

],

"client-classes": [

    {

        "name": "all-with-reservation",

        "test": "member('KNOWN')",

        "only-if-required": true

    },

    {

        "name": "reservation",

        "only-if-required": true

    }

],

"subnet4": [

  {

    "id": 151,

    "subnet": "172.21.151.0/24",

    "pools": [ { "pool": "172.21.151.5-172.21.151.254" } ],

    // all known

    "require-client-classes": [ "all-with-reservation"],

    // class assigned to reservation

    //"require-client-classes": [ "reservation"],

    }

....



Thanks,

Christian
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