Hi Darren,
On 11/19/25 3:58 PM, Darren Ankney wrote:
Hi Gregor, That *should* work, but you don't have to do it that way. You could specify the reservation globally, set `"reservations-global": true` (https://kea.readthedocs.io/en/stable/arm/dhcp4-srv.html#fine-tuning-dhcpv4-host-reservation) and specify whatever classes are necessary in "client-classes" so that you would only need to have one entry per client. This may reduce performance but see here: https://reports.kea.isc.org/ for Kea performance numbers, perhaps it is not a concern?
Actually this is the part where i am right now trying to wrap my head around.
It is totally unclear to me if reservations-in-subnet or reservations-global is what i should use. I guess you will hear from me for this one as well :) gg
Thank you, Darren Ankney On Wed, Nov 19, 2025 at 4:16 AM Gregor Kling <[email protected]> wrote:Hello, On 11/18/25 10:13 AM, Gregor Kling wrote:If i am understanding correctly, i'll have to to put #+begin_quote "hw-address": "a1:bb:cc:dd:ee:ff", "client-classes": [ "pool_name_1", "pool_name_etc" ] #+end_quote (without ip-address) in every subnet reservations block where i want to have the system with the mac address: "a1:bb:cc:dd:ee:ff" get an address from the "matching" dynamic pool?To answer myself: https://kea.readthedocs.io/en/kea-3.0.2/arm/dhcp4-srv.html#host-reservations-in-dhcpv4 is clear about that: #+begin_quote Making a reservation for a mobile host that may visit multiple subnets requires a separate host definition in each subnet that host is expected to visit. It is not possible to define multiple host definitions with the same hardware address in a single subnet. Multiple host definitions with the same hardware address are valid if each is in a different subnet. #+end_quote gg -- Gregor Kling Abteilung ITS, Sachgebiet ITS-N Technische Hochschule Mittelhessen University of Applied Sciences Tel: 0641/309-1292 E-Mail: [email protected] -- ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. [email protected]
-- Gregor Kling Abteilung ITS, Sachgebiet ITS-N Technische Hochschule Mittelhessen University of Applied Sciences Tel: 0641/309-1292 E-Mail: [email protected]
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