Interesting fact: I didn’t reset the SFT1200, but after like 300KB of such log messages, it didn’t appear anymore, for not apparent reason.

System log:

Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.271717] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.282641] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.292359] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.302541] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.312266] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:41 2023 kern.warn kernel: [173304.322446] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:42 2023 kern.warn kernel: [173304.449311] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:42 2023 kern.warn kernel: [173304.455048] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:42 2023 kern.warn kernel: [173304.465449] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:29:42 2023 kern.warn kernel: [173304.475547] siwifi_calculate_legrate invalid legrate: 4
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.142745] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.152506] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.162351] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.172837] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.183836] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.194521] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.300189] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.305947] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.315680] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:31:02 2023 kern.warn kernel: [173385.326121] siwifi_calculate_legrate invalid legrate: 7
Sat Dec  9 10:55:50 2023 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED c2:4f:d6:xxxxxx

Kernel log:

[173385.142745] siwifi_calculate_legrate invalid legrate: 7
[173385.152506] siwifi_calculate_legrate invalid legrate: 7
[173385.162351] siwifi_calculate_legrate invalid legrate: 7
[173385.172837] siwifi_calculate_legrate invalid legrate: 7
[173385.183836] siwifi_calculate_legrate invalid legrate: 7
[173385.194521] siwifi_calculate_legrate invalid legrate: 7
[173385.300189] siwifi_calculate_legrate invalid legrate: 7
[173385.305947] siwifi_calculate_legrate invalid legrate: 7
[173385.315680] siwifi_calculate_legrate invalid legrate: 7
[173385.326121] siwifi_calculate_legrate invalid legrate: 7
[174872.594542] tx pkt(1) disassoc to [c2:4f:d6:xxxxxx] reasoncode: 4
[174872.595834] hb-fmac 17800000.wifi-hb wlan0: Del key for sta 12 (c2:4f:d6:xxxxxx)
[174873.595748] tx pkt(1) deauth to [c2:4f:d6:xxxxxx] reasoncode: 2
[174873.596778] hb-fmac 17800000.wifi-hb wlan0: Del key for sta 12 (c2:4f:d6:xxxxxx)
[174873.597093] hb-fmac 17800000.wifi-hb wlan0: Del sta 12 (c2:4f:d6:xxxxxx)
[174873.597384] remove STA c2:4f:d6:xxxxxx from hash table success

I’m letting the system run, to see what happen next.