Peter Mogensen wrote:"In case the rewritten DN is an LDAP URI, the operation is initiated towards the host[:port] indicated in the uri, if it does not refer to the local server"
That sentence belongs to a "white paper" that eventually evolved into a man page; unfortunately, items on a wish list seem to have slipped in.
That thought crossed my mind... :)
That feature has never existed, although it could be useful.
Oh bummer...
In principle, you could use back-dnssrv to have requests turned into referrals based on DNS SRV entries (draft-ietf-ldapext-locate); the referrals could be automatically chased by an instance of slapo-chain(5). This requires your DNS to expose the DNS SRV for ldap regarding those servers that service each naming context you want to be mapped. Otherwise, I think the feature you need could be added in slapd-meta(5) somehow (and might be of general use). You could submit a feature request via the ITS <http://www.openldap.org/its/> (best accompanied by a patch :)
;-)
Thanks for your advice.