Intel Pro/Wireless 2200BG (iwi) firmware error / device timeout

[Joseph Mingrone]

I see there are still some open PRs for this problem, but they are a
couple of years old.  Does anyone know of any workarounds?

I don't recall having problems in 7.x, but in 8.x I see the firmware
errors every few hours. If I try to do a # /etc/rc.d netif restart the
system reboots.

# pciconf -lv
...
iwi0 at pci0:2:2:0:        class=0x028000 card=0x27018086 chip=0x42208086
rev=0x05 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'driverIntel PRO/Wireless 2200BG (MPCI3B)'
    class      = network

# cat /boot/loader.conf
...
legal.intel_iwi.license_ack=1
if_iwi_load="YES"

# cat /etc/rc.conf | grep wlan
wlans_iwi0="wlan0"
ifconfig_wlan0="WPA DHCP"

# cat /etc/wap_supplicant.conf
network={
        ssid="myssid"
        psk="mypsk"
}