Edit: How to setup guest wifi on main ssid with network selected by password entered

[lleachii]

Individual per-passphrase Wifi VLANs using wpa_psk_file (no RADIUS required)

IMPORTANT NOTE: I wrote this in early 2023, when 22.03 was current and the default SSL library was wolfssl. With 23.05, the default SSL library has changed to mbedtls. If you're following this topic on 23.05 or later, please substitute any mentions of wolfssl with mbedtls, especially in the packages you install. After a lot of fiddling and trial-and-error I found the problem: The default hostapd provided by wpad-basic is not enough, one needs the fully featured hostapd or w…