https://bugs.openldap.org/show_bug.cgi?id=10158
--- Comment #3 from umagmrit@gmail.com --- Earlier, we used to compile curl ourselves by disabling LDAP protocol support: https://github.com/Zimbra/packages/blob/develop/thirdparty/curl/zimbra-curl/..., and we haven't faced this issue. But now we are compiling OpenLDAP with OS-provided curl instead of our compiled curl, and I think OS curl enables LDAP protocol support by default, and OS curl is linked to libldap-2.4.so.2 and getting this issue with that.