https://bugs.openldap.org/show_bug.cgi?id=9497
--- Comment #2 from Quanah Gibson-Mount quanah@openldap.org --- one commit pulled in for 2.6 and 2.5:
• 31b0bf68 by HAMANO Tsukasa at 2021-08-17T15:45:06+00:00 ITS#9497 fix duplicate ldap control response