In my home building are certain Wifi AP to which my L5 tries to associate to asking for the WPA password, or even connects to because they dont use a paaword and only assign an IP addr when using its capture portal.
Is there a way to biacklist them based on its SSID?
Internet says: study the file /usr/share/doc/wpa_supplicant/examples/wpa_supplicant.conf which gives a few examples of telling it to ignore certain wireless access points. Then configure your /etc/wpa_supplicant.conf accordingly. This may blacklist by MAC address rather than by SSID but maybe that is good enough.
nmcli device wifi should list MAC addresses and SSIDs, which you can pick through to work out which are yours and which are someone else’s.