Hi Darren,

Many thanks – that certainly sounds like it should work.

Regards,

Bret

From: Darren Ankney <darren.ank...@gmail.com>
Date: Thursday, 26 September 2024 at 11:08
To: Kea user's list <kea-users@lists.isc.org>
Cc: Giddings, Bret <b...@essex.ac.uk>
Subject: Re: [Kea-users] Per-host or client-class echo-client-id
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Hi Bret,

The client-identifier is a DHCP option so you could use the
flex-option hook to remove the option in certain situations.  You can
match on membership in a class, for example, if you can classify these
clients in some way. Then use the remove mechanism of flex option to
remove the dhcp-client-id (option 61) from the response.  This KB
article has an example of performing a similar action:
https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fkb.isc.org%2fdocs%2fredefining-standard-options&c=E,1,UH_Zg7E85WMZSeMxE0HroaDx0fTWuyisuMCinvQq_AEdxHQYOMNKSnxRqe9C8izaQvbky0ivE2WJ-DjVGP4r2EfEhfUxAeK08o8ExFBf5pz9IQ,,&typo=1

Thank you,
Darren Ankney

On Wed, Sep 25, 2024 at 2:17 PM Giddings, Bret via Kea-users
<kea-users@lists.isc.org> wrote:
>
> Hi,
>
>
>
> I’m migrating a site with about 11000 leases to kea and have found a small 
> subnet (~200 devices) that don’t work if echo-client-id is true. Is there a 
> more granular way to control this setting as I’d prefer to stick with current 
> RFC defaults which then means I need a second kea instance just for this 
> small subnet of legacy devices. I could easily assign this subnet to a 
> different client class, but I can’t see any way of controlling the echoing of 
> client id at this level.
>
>
>
> Currently using ISC supplied packages
>
>
>
> # kea-dhcp4 -V
>
> 2.4.1
>
> tarball
>
> linked with:
>
> log4cplus 2.0.8
>
> OpenSSL 3.0.14 4 Jun 2024
>
> database:
>
> MySQL backend 19.0, library 3.3.8
>
> PostgreSQL backend 18.0, library 150008
>
> Memfile backend 3.0
>
>
>
> Regards,
>
>
>
> Bret
>
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