Multiple base dn's (multiple naming contexts)

[Tom Johnson <tj@terramar.net>]

(Forgive me if I get some terminology incorrect, I'm new to LDAP).

I've set up a basic configuration for a server that needs to support
multiple domains.

Each domain has been configured:

dc=domain1,dc=com
objectclass=top
objectclass=dcObject
dc=domain1

dc=domain2,dc=net
objectclass=top
objectclass=dcObject
dc=domain1

I can add entried under either of these naming contexts, and I can
search for them - both of these work:
   ldapsearch -b "dc=domain1,dc=com" "objectclass=*"
   ldapsearch -b "dc=domain2,dc=net" "objectclass=*"

How can I do one search that would find all entries in both naming
contexts?

Alternately, how do I find the different base's?  I think LDAP V3
supports this, by setting the scope
to "base" and the base to null.  Is it possible with OpenLDAP 1.2?

Thanks-

Tom