Network Interfaces

# The loopback network interface

    auto lo

    iface lo inet loopback

# Static Interface 1

    auto eth0

    iface eth0 inet static

    address 192.168.1.25

    netmask 255.255.255.0

    gateway 192.168.1.1

#  DNS server configuration

    dns-nameservers 209.244.0.3 8.8.8.8

#  domain prefix    

    dns-search unity.local

$  sudo service networking restart

$  sudo service network-manager stop

$  sudo update-rc.d NetworkManager remove

$  sudo sed -i 's/managed=true/managed=false/g' /etc/NetworkManager/NetworkManager.conf

$  sudo service network-manager restart