auto wlan0
iface wlan0 inet dhcp
    udhcpc_opts -t 15
    pre-up wpa_passphrase "$(fw_printenv -n wlanssid || echo OpenIPC)" "$(fw_printenv -n wlanpass || echo OpenIPC12345)" > /tmp/wpa_supplicant.conf
    pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
    pre-up wpa_supplicant -D nl80211 -i wlan0 -c /tmp/wpa_supplicant.conf -B
    post-down killall -q wpa_supplicant