우분투 IP설정

$ sudo ifdown eth0 (생략가능)
$ sudo vi /etc/network/interfaces

    auto lo
    iface lo inet loopback

    auto eth0
    iface eth0 inet static
    address 192.168.0.2
    netmask 255.255.255.0
    gateway 192.168.0.1
    dns-nameservers 168.126.63.1 168.126.63.2

$ sudo ifup eth0 (생략가능)
$ sudo /etc/init.d/networking restart