Syslog messages show client has been disconnected for 15 seconds
Sat Dec 12 12:32:32 2020 daemon.notice hostapd: wlan0-apname: AP-STA-DISCONNECTED 0c:96:e6:4a:b2:8b
Sat Dec 12 12:32:32 2020 daemon.info hostapd: wlan0-apname: STA 0c:96:e6:4a:b2:8b IEEE 802.11: disassociated
Sat Dec 12 12:32:33 2020 daemon.info hostapd: wlan0-apname: STA 0c:96:e6:4a:b2:8b IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Sat Dec 12 12:32:48 2020 daemon.info hostapd: wlan0-apname: STA 0c:96:e6:4a:b2:8b IEEE 802.11: authenticated
Sat Dec 12 12:32:48 2020 daemon.info hostapd: wlan0-apname: STA 0c:96:e6:4a:b2:8b IEEE 802.11: associated (aid 1)
Sat Dec 12 12:32:48 2020 daemon.notice hostapd: wlan0-apname: AP-STA-CONNECTED 0c:96:e6:4a:b2:8b
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Regards
Juergen