Multiple views (more than 2)

[Marek Kozlowski]

:-)

There are 4 name servers for my domain: two internal ones (my CIDR, 
managed by me) and two external ones (foreign IP, I have no 
administrative privileges).

I've been using two views: the private one (for my clients, served by my 
servers) and a public one (for remote clients, served by all four name 
servers). It used to work :-)

Now it's desired to create multiple different private views served by my 
name servers (one view for clients from each subnet of my network) and a 
single public view (the same as till now) and I'm getting a bit confused 
with keys and "match-clients" directives...

Any example, link, general formula or some smart how-to, or anything 
welcome...

Thanks a lot!
Best regards,
Marek