Which clients are using my Sun One server for authentication?

We use Sun One ver. 5.2 .
Our LDAP clients use it for authentication.
How can I list which clients recently used the Sun One server to authenticate?
The reason I need that is because I want to upgrade the Sun One server and I want to notify the clients that I'm about to do it.
Thanks.

https://www.redhat.com/archives/fedora-directory-users/2005-September/msg00010.html
Useful script to extract LDAP based user posixGroup memberships information
===
Assuming you are using posixGroup objectclass and memberUid attribute to
store your membership information, you may find my shell script useful
and handy.
It works on Solaris LDAP Client with "ldapaddent" and "ldaplist"
commands, and works against FDS, SUN DS or OpenLDAP.
===
Gary

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