https://lists.openldap.org/hyperkitty/list/openldap-software@openldap.org/message/FVY5Y3B67BSBYXX2TI6LXLPTM34ZNOCJ/
Re: Using UPN notation for LDAPbind - openldap-software - openldap.org
usingupnnotationopenldapsoftware
https://lists.openldap.org/hyperkitty/list/openldap-technical@openldap.org/thread/WS7VYMX6KP6WWKFRIO2X4ECJCNZAOUUP/
ldapbind() timeout can't work . - openldap-technical - openldap.org
timeoutworkopenldaptechnical