How to make a virtual network interface attached to eth0?

[Alexandr Didenko]

I need Omega2sp to have two different networks over one Ethernet wire.
On Linux it could be done something like this:

iface eth0 inet static
   address 192.168.2.150
   netmask 255.255.255.0
   network 192.168.2.0
   broadcast 192.168.2.255
   gateway 192.168.2.253
   # dns-* options are implemented by the resolvconf package, if installed
   dns-nameservers 8.8.4.4

iface eth0:1 inet static
    address 192.168.2.2
    netmask 255.255.255.0
    network 192.168.2.0
    broadcast 192.168.2.255
    gateway 192.168.2.253

or

ip addr add 192.168.2.2/24 brd + dev eth0 label eth0:0

[crispyoz]

@Alexandr-Didenko You need kmod-macvlan loaded then you can configure multiple virtual devices with separate IPs.