moduleload ...path/to/slapd-sha2.so
-5) This module also requires the use of the slapo-lastbind overlay. You
-should build that module and also add it to your slapd configuration.
+5) This module replaces the function of the slapo-lastbind overlay. You
+cannot use that overlay on the same database as this one.
6) Restart slapd.
database mdb
...
-overlay lastbind
overlay totp