Something

repvik@dorull:~$ cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
        address 89.149.208.128
        netmask 255.255.255.0
        network 89.149.208.0
        broadcast 89.149.208.255
        gateway 89.149.208.1
        #dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 217.20.116.1 217.20.115.1

auto eth0:1
iface eth0:1 inet static
        address 89.149.201.38
        netmask 255.255.255.0
        network 89.149.201.0
        broadcast 89.149.201.255
        gateway 89.149.201.1
        dns-nameservers 217.20.116.1 217.20.115.1

auto eth0:2
iface eth0:2 inet static
        address 89.149.200.90
        netmask 255.255.255.0
        network 89.149.200.0
        broadcast 89.149.200.255
        gateway 89.149.200.1
        dns-nameservers 217.20.116.1 217.20.115.1