I’m not having any luck. I’m able to create the interface but when I setup wlan1 to work in AP mode nothing happens. I decided to try unmanaged so I disabled the network manager and set things up using /etc/network/interfaces. I created a udev rule to create wlan1 but I can’t get that working. I can run the commands from the command line and the interface shows up in iwconfig and ifconfig but if I restart networking it fails stating wlan1 is unknown.
Regarding firmware and driver version, looking in dmesg I can see the following:
Firmware version = wl0: Mar 6 2017 10:16:06 version 18.104.22.168 (r686312) FWID 01-4dcc75d9
Dongle Host Driver, version 1.322.214.171.124 ®
ACTION==“add|change”, SUBSYSTEM==“ieee80211”, KERNEL==“phy0”,
RUN+="/sbin/iw phy phy0 interface add wlan1 type __ap",
RUN+="/bin/ip link set wlan1 address ac:83:f3:e5:1b:61"