[Kea-users] Identify on VENDOR_CLASS_

DDFR | Ronald Blaas ronald.blaas at ddfr.nl
Thu Jul 20 12:42:52 UTC 2023


Hi Mathias,

I was just about to sent the exact same thing. 🙂

The problem I have with the substring is that I do not know if the substring will change (with a newer software update or whatever..)

as for you expression starting on 0 and a length of 6 will give me (in the currect string) 'geneos'  but what gaurantees are there option 60 string will not change (to polar,geneos...xxxx., whatever)

until now I can make the expression by using split with the same limitations as mentioned above.
"test": "split(option[60].text, 0x2C, 2) == 'polar'",


Thanks for the insights.


________________________________
Van: Mathias Aichinger <mathias.aichinger at easysol.at>
Verzonden: donderdag 20 juli 2023 14:37
Aan: DDFR | Ronald Blaas <ronald.blaas at ddfr.nl>
CC: kea-users at lists.isc.org <kea-users at lists.isc.org>
Onderwerp: Re: [Kea-users] Identify on VENDOR_CLASS_

Hi,

I have just checked with my device. Genexis is sending it already with colons therefore the automatically created class would be " VENDOR_CLASS_geneos-polar-3.13.1-R,polar,fibertwist-p2410,dslforum.org<http://dslforum.org>" which does not help you.

I personally would use the substring function to extract geneos-polar without the version stuff as this is changing.

Unrelated example: "test": "substring(option[60].hex,0,6) == 'docsis'"

A newer fibertwist with the new software platform is sending this:
FiberTwist-P6426,GenXOS-Panda-GNX-11.8.0-R,dslforum.org<http://dslforum.org>
So here I would extract "FiberTwist-P6426".

Best Regards,

Mathias

On 20.07.2023, at 14:25, DDFR | Ronald Blaas <ronald.blaas at ddfr.nl> wrote:

Hi Mathias,

thanks for the quick reply.
Unfortunately this does not work
When I try your solution kea-dhcp does not start:
 expression: [member('polar')] error: <string>:1.8-14: Not defined client class 'polar'

Regards,

________________________________
Van: Mathias Aichinger <mathias.aichinger at easysol.at>
Verzonden: donderdag 20 juli 2023 14:15
Aan: DDFR | Ronald Blaas <ronald.blaas at ddfr.nl>
CC: kea-users at lists.isc.org <kea-users at lists.isc.org>
Onderwerp: Re: [Kea-users] Identify on VENDOR_CLASS_

Hi Ronald,

I think you don't need the "VENDOR_CLASS_".

try with "test": "member('polar')"

Best Regards,

Mathias

On 20.07.2023, at 14:06, DDFR | Ronald Blaas <ronald.blaas at ddfr.nl> wrote:

Hi all,

I am trying to identify on VENDOR_CLASS_ bu t seems not to be working..

This is what I tried so far:

kea-conf
(snippet)
 "client-classes": [
        {
            "name": "Genexis",
            "test": "member('VENDOR_CLASS_polar')",



Debug Log

DEBUG [kea-dhcp4.dhcp4/115727.139716649023040] DHCP4_CLASS_ASSIGNED [hwtype=1 58:00:32:31:34:f0], cid=[ff:00:01:00:01:00:03:00:01:58:00:32:31:34:f0], tid=0x7dba8a8d: client packet has been assigned to the following class(es): ALL, HA_dhcp2, VENDOR_CLASS_geneos-polar-3.13.1-R,polar,fibertwist-p2410,dslforum.org<http://dslforum.org/>, UNKNOWN

DEBUG [kea-dhcp4.eval/115727.139716649023040] EVAL_DEBUG_MEMBER Checking membership of 'VENDOR_CLASS_polar', pushing result 'false'



I was succesfull using this test:
          "test": "split(option[60].text, 0x2C, 2) == 'polar'",

But I have no clue if 'polar' is always on the second value....

Any insights is appreciated.

Regards
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