auto lo
iface lo inet loopback
iface eth0 inet dhcp
iface eth0 inet static
address 192.168.100.2
netmask 255.255.255.0
gateway 192.168.100.1
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp