using nasid instead of client ip..

[Oguzhan Kayhan]

Hello,
I have a server with mutliple ethernets working on.
I need to run an authentication server(called chilli or coova) on 2 
different ethernets which needed to authenticate with different radius
servers.
I am currently running my radius with virtual servers.
The problem is,
I created virtual servers according to client ip's as

client 192.168.0.15 {
        shortname       = client-a
        secret          = xxxxxxx
        virtual_server  = radius-a
}

And now when i try to run second different client software on same server,
because the client ip still 192.168.0.15 it uses same virtual server on
radius.
Is there any other way to use different virtual server according to nasip
for example???
or any other way that i can seperate clients except the ip addresses???

Im using radius 2.0.5

Thank you.