Syslog polluted by one wifi/hostapd entries from one device

(I initially posted this as a a question on @davidc502's custom builds thread on the now-defunct OpenWrt forums but I never got to find out if anyone had an answer as by then, the forums were offline!)


I have a load of devices connected by wifi to my WRT1900ACS (running on David's custom build) and they're all fine. My brother's iPhone also works fine with the wifi on the WRT1900ACS.

However, it floods the syslog with entries like this ad nauseum:

Tue May 15 15:51:36 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX IEEE 802.11: authenticated
Tue May 15 15:51:36 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX IEEE 802.11: associated (aid 5)
Tue May 15 15:51:36 2018 daemon.notice hostapd: wlan1: AP-STA-CONNECTED AA:XX:BB:XX:CC:XX
Tue May 15 15:51:36 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX WPA: pairwise key handshake completed (RSN)
Tue May 15 15:54:06 2018 daemon.info hostapd: wlan0: STA AA:XX:BB:XX:CC:XX IEEE 802.11: authenticated
Tue May 15 15:54:06 2018 daemon.info hostapd: wlan0: STA AA:XX:BB:XX:CC:XX IEEE 802.11: associated (aid 2)
Tue May 15 15:54:06 2018 daemon.notice hostapd: wlan0: AP-STA-CONNECTED AA:XX:BB:XX:CC:XX
Tue May 15 15:54:06 2018 daemon.info hostapd: wlan0: STA AA:XX:BB:XX:CC:XX WPA: pairwise key handshake completed (RSN)
Tue May 15 15:54:47 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX IEEE 802.11: authenticated
Tue May 15 15:54:47 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX IEEE 802.11: associated (aid 5)
Tue May 15 15:54:48 2018 daemon.notice hostapd: wlan1: AP-STA-CONNECTED AA:XX:BB:XX:CC:XX
Tue May 15 15:54:48 2018 daemon.info hostapd: wlan1: STA AA:XX:BB:XX:CC:XX WPA: pairwise key handshake completed (RSN)
Tue May 15 15:59:54 2018 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED AA:XX:BB:XX:CC:XX
Tue May 15 15:59:54 2018 daemon.info hostapd: wlan0: STA AA:XX:BB:XX:CC:XX IEEE 802.11: disassociated due to inactivity
Tue May 15 15:59:55 2018 daemon.info hostapd: wlan0: STA AA:XX:BB:XX:CC:XX IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)

I'm at a loss for why this is happening. The iPhone itself works fine via wifi. No other device in the household is posing such issues on the syslog. And my brother's iPhone was fine on the previous LEDE device we were using.

It's not a show stopper by any means as the wifi still works perfectly on his iPhone but it is odd for just one device to be creating so much activity on the system log. Any thoughts?

I've only experienced this issue when there is poor signal between the device and the Access Point.

I did consider that too (it would make sense if the device and the AP are far away that it would try and fail repeatedly). But it doesn't make sense because it didn't happen on previous LEDE/OpenWrt routers and the fact the iPhone is not all that far from the AP anyway!

It would make sense if the Station-Side Krack and Spectre mitigation was enabled (that feature didn't exist until LEDE 17.01.4).

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This was discussed recently in another thread, and is considered normal logging.

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