This is required for some Kindles (e.g. Kindle Paperwhite 7th Gen),
and printers (e.g. Brother MFC-J4440DW).
OpenWRT typically adds "wpa_key_mgmt = WPA-PSK", per 3f28c422ba/package/network/config/wifi-scripts/files/lib/netifd/hostapd.sh (L44-L71)
This is required for some Kindles (e.g. Kindle Paperwhite 7th Gen),
and printers (e.g. Brother MFC-J4440DW).
OpenWRT typically adds "wpa_key_mgmt = WPA-PSK", per 3f28c422ba/package/network/config/wifi-scripts/files/lib/netifd/hostapd.sh (L44-L71)