Okay, so I created interface WIFI_LAN and, set it to be static address, changed the subnet to different from default LAN (192.168.0.1/255.255.255.0), enabled DCHP server for Wifi client, added Wlan01 to the list of interfaces and set up Firewall Zone.
However in my system log I get this:
Thu Jan 14 01:29:10 2021 daemon.notice hostapd: wlan1: AP-STA-DISCONNECTED 51:20:19:17:1e:c2
Thu Jan 14 01:29:11 2021 daemon.info hostapd: wlan1: STA 51:20:19:17:1e:c2 IEEE 802.11: authenticated
Thu Jan 14 01:29:11 2021 daemon.info hostapd: wlan1: STA 51:20:19:17:1e:c2 IEEE 802.11: associated (aid 1)
Thu Jan 14 01:29:11 2021 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 51:20:19:17:1e:c2
Thu Jan 14 01:29:11 2021 daemon.info hostapd: wlan1: STA 51:20:19:17:1e:c2 RADIUS: starting accounting session 67B4CBE23E0CAC6E
Thu Jan 14 01:29:11 2021 daemon.info hostapd: wlan1: STA 51:20:19:17:1e:c2 WPA: pairwise key handshake completed (RSN)
Thu Jan 14 01:29:11 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
Thu Jan 14 01:29:11 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
Thu Jan 14 01:29:12 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
Thu Jan 14 01:29:13 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
Thu Jan 14 01:29:14 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
Thu Jan 14 01:29:17 2021 daemon.warn dnsmasq-dhcp[4493]: DHCP packet received on wlan1 which has no address
It's config from network:
config interface 'WIFI_LAN'
option ifname 'wlan1'
option proto 'static'
option netmask '255.255.255.0'
option ipaddr '192.168.0.1'
list dns '8.8.8.8'
list dns '1.1.1.1'
Getting:
ERROR: Network device is not present
I've added it to "Switch VLAN eth0.1" is is one default LAN interface uses but this again enabled wifi access to Luci and everything on router.
Basically what you suggested does not work.