Patch against current HEAD for this:
Index: ./servers/slapd/schema_prep.c =================================================================== RCS file: /repo/OpenLDAP/pkg/ldap/servers/slapd/schema_prep.c,v retrieving revision 1.189 diff -u -r1.189 schema_prep.c --- ./servers/slapd/schema_prep.c 4 Jan 2011 23:43:16 -0000 1.189 +++ ./servers/slapd/schema_prep.c 3 Mar 2011 11:25:59 -0000 @@ -934,6 +934,7 @@ "DESC 'RFC2307: An integer uniquely identifying a user " "in an administrative domain' " "EQUALITY integerMatch " + "ORDERING integerOrderingMatch " "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE )", NULL, 0, NULL, NULL, @@ -944,6 +945,7 @@ "DESC 'RFC2307: An integer uniquely identifying a group " "in an administrative domain' " "EQUALITY integerMatch " + "ORDERING integerOrderingMatch " "SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE )", NULL, 0, NULL, NULL,