[Samba] Dual Interface

[Kevin Fries]

I was wondering if it is possible to get Samba to act like two servers on
one box?

I need to upgrade our RH 7.2 PDC and would like to make some configuration
changes.  To this end, I have build a solid migration plan, but it hinges
on if Samba can be used in a particular way, and I have not seen any
documentation either way, so I think I am searching for the wrong terms.

The Plan:
  - Use a development box and have it start responding on two IP addresses
  - Allow the dev-box to expose its shares on its traditional address
  - Allow it to be a PDC on the NEW/SECONDARY address (different set of
    shares)

I will also be migrating its database to LDAP while on the dev box so when
the original server is ready to take over as a PDC again, I just install
it; point at the LDAP for its user accounts; remove the PDC configuration;
make it boot on only one IP again; then replicate all the data.

The big question is, has anyone seen any howtos or documentation on setting
a samba server to act as two samba servers, one configured as a PDC and the
other configured with only public shares (restricted by IP not UID)

TIA
Kevin Fries