[Kea-users] DHCPv6 option 16 and built in client class

[Veronique Lefebure]

Hi Xuo,

I don't know if you made any progress on this.

I have been playing a bit more with dhpv6 these days and in fact, when a client is assigned to class UNKNOWN I believe that it only means that no host-reservation was found by KEA for that client.
It does not mean that your client-class was not assigned to the client.

I have for example a client that got this:

2023-02-02 15:23:50.314 DEBUG [kea-dhcp6.dhcp6/2605.139812835567808] DHCP6_CLASS_ASSIGNED duid=[xxxx], tid=0x37acf: client packet has been assigned to the following class(es): UNKNOWN

2023-02-02 15:23:50.314 WARN  [kea-dhcp6.alloc-engine/2605.139812835567808] ALLOC_ENGINE_V6_ALLOC_FAIL_CLASSES duid=[xxxx], tid=0x37acf: Failed to allocate an IPv6 address for client with classes: ALL, HA_kea1, my_class1, my_class2, my_class3, UNKNOWN

So from the above lines you can see that KEA has associated not only class "UNKNOWN" to the client, but also my_class1, my_class2, my_class3 for which we got
EVAL_RESULT Expression my_class1 evaluated to 1
EVAL_RESULT Expression my_class2 evaluated to 1
EVAL_RESULT Expression my_class3 evaluated to 1

For each packet, you will find 2 debug lines from KEA, here is another example I have (for a KNOWN client this time):

2023-02-02 16:43:59.942 DEBUG [kea-dhcp6.dhcp6/7590.139769432221888] DHCP6_CLASS_ASSIGNED duid=[yyyy], tid=0x64ffd2: client packet has been assigned to the following class(es): KNOWN
2023-02-02 16:43:59.943 DEBUG [kea-dhcp6.dhcp6/7590.139769432221888] DHCP6_CLASS_ASSIGNED duid=[yyyy], tid=0x64ffd2: client packet has been assigned to the following class(es): ALL, HA_kea1, my_class1, my_class2, my_class3, KNOWN

Hope this helps.
Cheers,
Veronique

________________________________
From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of Xuo Guoto via Kea-users <kea-users at lists.isc.org>
Sent: Tuesday, December 6, 2022 8:33 AM
To: Kea-users at lists.isc.org <kea-users at lists.isc.org>
Subject: Re: [Kea-users] DHCPv6 option 16 and built in client class

Thanks for your reply, Darren.

I have been trying different approaches to get client class working with DHCPv6.


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