chanlist option not working properly?

[Koen Vandeputte]

On Wed, Oct 25, 2023 at 12:00 PM Koen Vandeputte
<koen.vandeputte at citymesh.com> wrote:
>
> Hi all,
>
> I have some devices which are present outdoor in Port/harbor area
> where wifi is pretty crowded.
>
> Settings:
> Wifi5 - VHT20
>
> To avoid weather radar, I tried using the chanlist option:
> chanlist=100-116 132-165
>
> When rebooting the devices 100 times as a test,  in 30% of the cases
> it still picks channels 120,124,128
> (Those are nearly empty here due to weather radar)
>
> Any idea what is going wrong here?
> (Tested on todays master state of hostapd)
>
>
>  Freq | Chan | Average |  Last   |  Noise  |   Wifi  |
>                                Graph
>               |
>  5180 |   36 |  21.39% |  21.82% |   0.34% |  21.47% | |||||||||||||||||||||
>  5200 |   40 |  16.17% |  12.63% |   0.99% |  11.63% | ||||||||||||||||
>  5220 |   44 |  24.36% |  21.22% |   1.34% |  19.88% | ||||||||||||||||||||||||
>  5240 |   48 |  19.46% |  16.83% |   0.00% |  16.93% | |||||||||||||||||||
>  5260 |   52 |  14.20% |  15.38% |   0.64% |  14.73% | ||||||||||||||
>  5280 |   56 |  28.79% |  22.72% |   3.79% |  18.93% |
> ||||||||||||||||||||||||||||
>  5300 |   60 |  30.30% |  30.96% |   7.94% |  23.02% |
> ||||||||||||||||||||||||||||||
>  5320 |   64 |  11.95% |  12.88% |   0.89% |  11.98% | |||||||||||
>  5500 |  100 |  12.31% |  12.73% |   1.94% |  10.78% | ||||||||||||
>  5520 |  104 |  49.47% |  47.60% |  35.21% |  12.38% |
> |||||||||||||||||||||||||||||||||||||||||||||||||
>  5540 |  108 |  61.72% |  60.63% |  47.40% |  13.23% |
> |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
>  5560 |  112 |  17.28% |  17.53% |   8.89% |   8.64% | |||||||||||||||||
>  5580 |  116 |   7.96% |   7.74% |   0.79% |   6.94% | |||||||
>  5600 |  120 |   2.95% |   2.84% |   0.39% |   2.44% | ||
>  5620 |  124 |   2.01% |   2.10% |   0.25% |   1.85% | ||
>  5640 |  128 |   6.47% |   6.89% |   0.59% |   6.29% | ||||||
>  5660 |  132 |  15.95% |  16.63% |   1.69% |  14.93% | |||||||||||||||
>  5680 |  136 |  53.53% |  51.40% |  10.14% |  41.25% |
> |||||||||||||||||||||||||||||||||||||||||||||||||||||
>  5700 |  140 |  20.76% |  20.52% |   3.14% |  17.38% | ||||||||||||||||||||
>  5745 |  149 |  44.25% |  44.55% |   0.00% |  45.60% |
> ||||||||||||||||||||||||||||||||||||||||||||
>  5765 |  153 |   8.81% |   4.74% |   1.14% |   3.59% | ||||||||
>  5785 |  157 |  30.73% |  42.65% |  16.33% |  26.32% |
> ||||||||||||||||||||||||||||||
>  5805 |  161 |  17.73% |  27.47% |  17.23% |  10.23% | |||||||||||||||||
>  5825 |  165 |  28.61% |  25.90% |  10.70% |  15.20% |
> ||||||||||||||||||||||||||||
>
>
>
> Full config:
>
>
> country_code=US
> driver=nl80211
>
> ssid2="TESTING"
> ignore_broadcast_ssid=0
>
> vht_oper_chwidth=0
> ht_capab=[SHORT-GI-20]
> hw_mode=a
> channel=0
> acs_num_scans=31
> chanlist=36-116 132-173
>
> ieee80211ac=1
> ieee80211n=1
> wmm_enabled=1
> wpa=2
> wpa_passphrase=mysuperpass
> wpa_key_mgmt=WPA-PSK
> rsn_pairwise=CCMP


anyone got any clue? :-)