Сеть поднимаю так.
#!/bin/bash
if /usr/sbin/wpa_supplicant -B -iwlp2s0 -c/etc/wpa_supplicant/wpa_supplicant.conf
then
dhcpcd wlp2s0
fi
modules="wpa_supplicant"
wpa_supplicant_wlp2s0="-i wlp2s0 -D wext -c /etc/wpa_supplicant/wpa_supplicant.conf"
config_wlp2s0="dhcp"
cd /etc/init.d/
ln -s net.lo net.wlp2s0
rc-update add net.wlp2s0 default