2 ip на одной сетевой

hw class address
              Set the hardware address of this interface, if the device driver  supports  this  operation.   The
              keyword  must  be followed by the name of the hardware class and the printable ASCII equivalent of
              the hardware address.  Hardware classes currently supported include ether (Ethernet),  ax25  (AMPR
              AX.25), ARCnet and netrom (AMPR NET/ROM)

cat /etc/network/interfaces
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet static
        address 10.168.1.2
        netmask 255.255.255.0
        network 10.168.11.0
        broadcast 10.168.11.255
        gateway 10.168.11.1
        dns-nameservers 217.117.80.1
        dns-search 441
        hwaddress ether 00:01:11:F4:E7:8A


allow-hotplug eth0:1
iface eth0:1 inet static
        address 192.168.1.2
        netmask 255.255.255.0
        network 192.168.11.0
        broadcast 192.168.11.255
        gateway 192.168.11.1
        dns-nameservers 217.117.80.1
        dns-search 441
        hwaddress ether 00:11:14:81:31:D3