zone file : subnetted multihomed

[Walker Simon-SWALKER1]

Hi Everyone, 
 
As this is my first DNS project I wondered if there are any considerations that I must adhere to if I have a multihomed node (3 interfaces infact) and they are subnetted interfaces from the same main network address.
 
That is to say :
 
Original IP 192.168.50.0
 
Say I subnetted this into 4 networks (255.255.255.192) and now the interfaces on the node are like so :
 
192.168.50.1--<node>--192.168.50.65
                |
         192.168.50.130
 
So in an example in O'reilly is says that you can have one hostname associated with a multihomed node. But I wondered how I go about doing this for a subnetted range like the one above? As how will the BIND Server know how to differentiate them for a particular client request?
 
I appreciated you help.
 
Regards, 
 
Si.