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Wi-Fi (WLAN) - WPA


Connect to the Wi-Fi network


The command to create the WPA configuration file is
wpa_passphrase MYNETSSID MYPASS > /etc/wpa_supplicant.conf

Replace MYNETSSID with the SSID of the network to connect.

Replace MYPASS with the passphrase/key for the network.


Disable the LAN network card ifconfig eth0 down

Enable the Wi-Fi network card ifconfig wlan0 up

Start wpa_supplicant wpa_supplicant -Dwext -i wlan0 -c/etc/wpa_supplicant.conf

On another terminal setup the IP address. Example for DHCP: dhclient wlan0

When you get an error like Ioctl[SIOCSIWMODE]: Operation not supported then see the fix below.


Auto start Wi-Fi connect


Create the wpa_supplicant.conf file wpa_passphrase MYNETSSID MYPASS > wpa_supplicant.conf

Copy the wpa_supplicant.conf file to the ploplinux/opt/ directory.

Edit the file ploplinux/bin/rc.local

Above the line "exit 0" insert

# wlan
ifconfig eth0 down
ifconfig wlan0 up
wpa_supplicant -B -Dwext -i wlan0 -c/media/ploplinux/opt/wpa_supplicant.conf

dhclient wlan0

You can also create a custom etc.tgz file to have all needed configurations inside the etc.tgz file.


Error message: Ioctl[SIOCSIWMODE]: Operation not supported


When you get the error messages

Successfully initialized wpa_supplicant
Ioctl[SIOCSIWMODE]: Operation not supported
Ioctl[SIOCSIWRANGE]: Operation not supported
Ioctl[SIOCSIWMODE]: Operation not supported
Ioctl[SIOCSIWAP]: Operation not supported
Ioctl[SIOCSIWESSID]: Operation not supported
Ioctl[SIOCSIWENCODEEXT]: Operation not supported
Ioctl[SIOCSIWENCODE]: Operation not supported
Ioctl[SIOCSIWENCODEEXT]: Operation not supported
Ioctl[SIOCSIWENCODE]: Operation not supported
Ioctl[SIOCSIWSCAN]: Operation not supported

Then replace -Dwext with -Dnl80211.
The whole line became wpa_supplicant -B -Dnl80211 -i wlan0 -c/etc/wpa_supplicant.conf

See also here.



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© 2016 by Elmar Hanlhofer