Wi-Fi Association Presence

After setup

• Grace periodHow long a device stays home after it was last seen associated to any access point. Covers roaming between access points, coverage gaps and a failing access point. Values under 30 s act as 30 s (away after one missed poll).
• Instant arrivalsAccess points that can report changes as they happen (MikroTik, OpenWrt, D-Link DAP through SNMP traps, and UniFi through its controller's event stream) make the integration poll at once, so arrivals show in seconds instead of up to a minute. Keeps one SSH connection open to each such MikroTik or OpenWrt access point or CAPsMAN controller, and one event stream to each UniFi controller; D-Link DAPs need their SNMP trap server set to Home Assistant's address. Departures still wait for the grace period, unless fast departure is on.
• Fast departureOff at 0. Otherwise, when an access point reports that a client left it (OpenWrt, D-Link DAP, UniFi; with instant arrivals on), a device missing from it is away this many seconds later instead of after the grace period. MikroTik, Cisco and TP-Link don't report clients leaving, so it changes nothing for them. Faster, but a device that drops off Wi-Fi for longer than this and comes back (power saving, a reconnect) shows away in between. Never under 10 s.
• SNMP trap portUDP port for SNMP traps from D-Link DAPs. They send to 162; use another port only if something else has 162 and the traffic is forwarded to this one.