[Kea-users] log the dhcp options the client requests

Munroe Sollog mus3 at lehigh.edu
Thu Aug 22 12:10:14 UTC 2019

We currently use the dhcp options a client requests to fingerprint the

On Thu, Aug 22, 2019 at 7:54 AM Tomek Mrugalski <tomasz at isc.org> wrote:

> On 22.08.2019 13:16, Munroe Sollog wrote:
> > Just a bump to see if any progress has been made in allowing servers
> > to log the options a client requests.
> Thanks for bringing this up. That's interesting and a bit dangerous
> request, especially if misconfigured.
> What exactly would you like to see in the log? Content of PRL or ORO
> options, i.e. a list of options being requested or the actual content of
> all options the client sent in its messages?
> Take a look at the loggers we currently have:
> https://kea.readthedocs.io/en/latest/arm/logging.html#the-name-string-logger
> In particular, you may look at kea-dhcp{4,6}.packets. If you're trying
> to debug a client that his packets are rejects,
> kea-dhcp{4,6}.bad-packets is something to look at. Also, there's
> kea-dhcp4.options logger.
> If none of those work for you, can you open an issue in gitlab?
> https://gitlab.isc.org/isc-projects/kea/issues
> Thanks,
> Tomek
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Munroe Sollog
Senior Network Engineer
munroe at lehigh.edu
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