samba - Oct 2007 - multihomed samba -- how to tell samba which ip-numbers to respond?

I have got a samba server with multiple interfaces.
Some of them are virtual interfaces in the same network dynamically 
assigned by a RedHat Cluster.

So "Server1" can have:
192.168.1.1 (physical)
192.168.1.42 (virtual)
192.168.1.43 (virtual)
192.168.1.44 (virtual)
...

192.168.2.1 (physical)
192.168.2.42 (virtual)
192.168.2.43 (virtual)
192.168.2.44 (virtual)
...

But virtual interfaces can change during runtime.

When a Microsoft Client broadcasts for "Server1"s ip-number. Server1 
responds one of it's ip-numbers on the corresponding network interfaces. 
Not necessarily the physical one.

I would like not to set "bind interfaces only = true", in order to
have
the samba server still listen for connections on virtual interfaces, 
especially when they are assigned during runtime of the samba server. 
But I would like it not to advertise them.

Is there a way to make the server answer only it's physical ip-number, 
when it receives a broadcast query?

Best regards
Christian