[Kea-users] Using option82 (isc-kea)

[Eric Graham]

Ronald,

There is another way to log these if you're willing to write some code or a script. The run_script hook (https://kea.readthedocs.io/en/kea-2.2.0/arm/hooks.html#run-script-run-script-support-for-external-hook-scripts) takes the path of an executable to run, and then passes it information about packets received through environment variables. Option 82 is one of the few that is passed to the program, so writing something to log it is fairly straightforward. Otherwise, writing a fully featured hook to log the option data is very possible, if you can't afford the legal logging hook.

Eric Graham
DevOps Specialist
Direct: 605.990.1859
Eric.Graham at vantagepnt.com<mailto:eric.graham at vantagepnt.com>
[cid:590a2152-6a12-4370-a2d4-82e7f99bdab0]
________________________________
From: Kea-users <kea-users-bounces at lists.isc.org> on behalf of Darren Ankney <darren.ankney at gmail.com>
Sent: Tuesday, June 20, 2023 4:36 AM
To: DDFR | Ronald Blaas <ronald.blaas at ddfr.nl>
Cc: kea-users at lists.isc.org <kea-users at lists.isc.org>
Subject: Re: [Kea-users] Using option82 (isc-kea)

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Hi Ronald,

There are two ways to log this.

1) log kea-dhcp4.packets at debug severity.  I'm not exactly sure what
level option 82 begins to appear but I believe it to be 50+
2) Use the forensic logging hook:
https://kea.readthedocs.io/en/kea-2.2.0/arm/hooks.html#legal-log-forensic-logging

Thank you,

Darren Ankney

On Mon, Jun 19, 2023 at 8:02 AM DDFR | Ronald Blaas
<ronald.blaas at ddfr.nl> wrote:
>
> Hi all,
>
> I have been searching and searching but could not find an answer to satisfy my needs.
>
> I am new in using kea-dhcp.
> I have a working setup using reservations with option 82 (circuit id).
> But What I would like is that I can see the circuit-id in plain text in the log file and lease file.
>
> How do I accomplish this?
>
> I am using Ubuntu 22.04 with the repository from cloudsmith.io
>
> Any insight is appriciated
>
> Regards,
>
> Ron
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