3.1.1.2.2.4.3 DN-String Comparison Rule
Values of String(DN-String) or String(Access-Point) are equal if the object_DN components name the same object and the string_value or presentation_address components are equal according to the UnicodeString comparison rule.
Evaluation of an LDAP_MATCHING_RULE_TRANSITIVE_EVAL matching rule is performed as documented in section 3.1.1.3.4.4. Only the object_DN component is considered when evaluating a filter clause that uses this rule; string_value or presentation_address is ignored.