/etc/network/interfaces
auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet dhcp
/etc/network/interfaces
auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet static address 254.254.254.2 netmask 255.255.255.252 network 254.254.254.0 broadcast 254.254.254.3 gateway 254.254.254.1 hwaddress ether 0b:0b:0b:0b:0b:0b dns-nameservers 194.204.152.34 194.204.159.1 dns-search dns.tpsa.pl allow-hotplug eth1:1 iface eth0 inet static address 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 allow-hotplug eth1:2 iface eth0 inet static address 192.168.2.1 netmask 255.255.255.0 network 192.168.2.0 broadcast 192.168.2.255