Uzaviram jako vyreseno, resenim nebylo poslat o na lo, ale vytvorit si vlan ktery pak switch zahodi - lokalne si to ale VLC veme:

apt-get install vlan

auto vlan1234
iface vlan1234 inet static
        address 10.10.100.1
        netmask 255.255.255.0
        network 10.10.100.0
        broadcast 10.10.100.255
        vlan_raw_device eth0

route add -net 224.0.0.0 netmask 240.0.0.0 dev vlan1234