https://fedorahosted.org/389/ticket/447
https://fedorahosted.org/389/attachment/ticket/447/0001-Trac-Ticket-447-P...
Fix description: This patch is adding a code to check if the value
of config parameter nsslapd-allowed-to-delete-attrs includes any
invalid attributes or not. If it does, the server ignores the
invalid ones, and the following search returns only the valid
attributes. Also, it is logged in the error log:
nsslapd-allowed-to-delete-attrs: Unknown attribute bogus will be
ignored