Hi Oliver, My understanding is that this is expected. Your dynamic pool is the only usable part. Then the reservation assigned addresses outside of the dynamic pool are added to the count. It is fuzzy to me whether these are only added if in-use, or assigned is enough, or exactly how that works, but they are added. There is a dedicated Stork users mailing list, you might have better luck with more detail there: https://lists.isc.org/mailman/listinfo/stork-users
Thank you, Darren Ankney On Fri, Dec 5, 2025 at 8:25 AM Oliver <[email protected]> wrote: > > Hi everyone, > > I’m running Kea DHCP4 together with Stork, and I’ve encountered something I > don’t fully understand regarding how Stork calculates the total number of > addresses in a subnet. > > I have a 1XX.9.3.0/24 subnet configured, with only a very small dynamic pool: > > pools: > - pool: 1XX.9.3.250-1XX.9.3.254 > > All other addresses in the /24 are used exclusively as static host > reservations. > > However, Stork reports the following: > > Total addresses: 62 > > Assigned: 51 > > Free: 11 > > Usage: 82.3% (yellow warning shown) > > My question is: > > Why does Stork calculate only 62 total usable addresses for this subnet, when > the subnet is actually a full /24? > > I understand that my dynamic pool only contains 5 addresses, but I expected > Stork to consider the rest of the /24 as part of the subnet, since I use > those addresses for reservations. > > Is this the expected behavior? > Does Stork count only “usable” addresses as those inside dynamic pools plus > explicitly configured reservations? > Is there a recommended way to have Stork recognize the entire /24 range so it > doesn’t trigger a high-usage warning? > > Operationally everything works fine — I can continue creating reservations > without any issue — but I’d like to confirm whether this behavior is normal > or whether I might be missing something in the configuration. > > Thanks in advance, > Oliver > > > -- > 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] -- 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]
