# /sbin/wifi restart wlan0
Interface is: wlan0
Stopping wpa_cli: FAIL
Stopping wpa_supplicant: OK
Starting wpa_supplicant: ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 4 value 0x0 - ctrl_iface exists and seems to be in use - cannot override it
Delete '/var/run/wpa_supplicant/wlan0' manually if it is not used anymore
Failed to initialize control interface '/var/run/wpa_supplicant'.
You may have another wpa_supplicant process already running or the file was
left by an unclean termination of wpa_supplicant in which case you will need
to manually remove this file before starting wpa_supplicant again.

ioctl[SIOCSIWAUTH]: Operation not supported
WEXT auth param 4 value 0x0 - FAIL
#