The rtwn driver fails to recognize a RTL8821AE WiFi device.
# pciconf -lv pci0:1:0:0:
none0@pci0:1:0:0: class=0x028000 card=0x882110ec chip=0x882110ec rev=0x00 hdr=0x00
vendor = 'Realtek Semiconductor Co., Ltd.'
device = 'RTL8821AE 802.11ac PCIe Wireless Network Adapter'
class = network
# kldstat | grep rt
7 1 0xffffffff82661000 d610 if_rtwn_pci.ko
8 2 0xffffffff8266f000 24a08 rtwn.ko
Thats a builtin wifi device in an ASRock Beebox barebone.
It was my understanding from the man page that upgrade to 12.0 should enable that support, but it doesn't.
I just submitted a new report that also contains a patch I wrote for a different device in the same class. It may or may not be of interest to you. bug #239795
Nope, this is one is not yet supported; 12.0 includes support for USB version of this chipset (RTL8821AU), not for PCIe (RTL8821AE).