> 
>>In that case, there would be virtual routers running in the system,
>>with each router instance bound to a set of interfaces in the system.
>>For efficiency of routing, the packets would be tagged with some
>>tag/index to denote which routing table to refer to.
> 
> Okey, can you explain more?
> 
>>- GPN
>>

http://linux-vrf.sourceforge.net/