Hi @Gertjan, thanks for your input.
To answer your questions:
• Approx. 150 leases, of which 78 are static mappings (classic MAC → IP).
• DHCP lease time is default at 7200, not shortened.
• Based on log parsing, I see about 3–5 DHCPACKs per hour, so roughly 80–100 per day.
• One active DHCP server on the LAN.
• About 20 WiFi clients, managed via a UniFi Controller, connected to pfSense.
• Typical clients: mostly Linux systems (servers, VMs, containers), some macOS devices, smartphones etc. No captive portal or guest networks.
Let me know if I can provide any more detail.