ifs:thinkpad ~ $ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

iface wlan0 inet dhcp
dns-nameservers 8.8.8.8 8.8.4.4