[LARTC] block ethernet IPv4 traffic

[Ed Wildgoose]

>the bridge thing is not possible.. the network is too big.. 300 machines..
>with over 30 switches (only one of them is manageable) :(
>Basically I want to deny ethertype 0800 (IPv4) packets for that LAN.
>The only solution I thought of was to have a linux machine in this LAN
>that has all the possible IP addresses set on its interface.
>  
>

Look, we can't help you until you explain the problem

WHY is it not possible to have a bridge?  This only requires two network 
cards?