I might have been able to figure this out earlier, but may I suggest that this is mentioned in the next revision of the mirrormode docs?
If you find a bug with the documentation, then please file an ITS at <http://www.openldap.org/its/> so it can be tracked and fixed. Give as much detail as sufficient to fully describe the issue with the documentation that you have found.
Thanks, Quanah -- Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration