https://bugs.openldap.org/show_bug.cgi?id=10060
--- Comment #13 from Howard Chu hyc@openldap.org --- Fwiw, it makes more sense to return the tag of the last message. The caller can easily obtain the tag of the first message, at nearly zero cost. But as the message chain can be arbitrarily long, it would take more effort for the caller to obtain the tag of the last message if we didn't return it.