Quote from: meyergru on October 08, 2026, 06:56:12 PMGenerally, there are usually one of these problems (not all with all DHCP servers, but hey):
1. With some servers (at least ISC), the creation of a static reservation does not get active unless the service is restarted.
2. Some servers (also ISC), you should not have static reservations within dynamic ranges.
3. When you let a client get a dynamic reservation and convert it to a static one, the dynamic reservation is not deleted, such that a reboot still gives the old IP. You have to manually clean the dynamic reservation from the lease file (and restart the service to recognize that fact).
4. With newer services, a DUID ist being used instead of a MAC (unless you change that setting) - which may give the impression that static reservations (for the MAC) do not work.
That being said, I know that is not an exact answer, just because I happen to use Kea and not DNSmasq.