Quanah, I should've been more detailed. The search isn't against an OpenLDAP instance. It's against Oracle/Sun Directory Server 5.2 Patch_6.
Then they are not advertising that the control exists, so I suggest you talk to whomever runs your directory server, or stop requesting that control.
--Quanah -- Quanah Gibson-Mount Architect - Server Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration