I am using Debian 11.

Openldap : 2.4.57+dfsg-3+deb11u1

python3-ldap : 3.2.0-4+b3

python3-ldap3: 2.8.1-1

TLS - 1.3

Openssl - 1.1.1n-0+deb11u3

I am try to set a new connect and then import files using below commands:

ldapcon = ldap.initialize('ldap://localhost')
ldapcon.set_option(ldap.OPT_PROTOCOL_VERSION, ldap.VERSION3)
ldapcon.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_NEVER)
ldapcon.set_option(ldap.OPT_X_TLS_NEWCTX, 0)

dn_to_add = 'cn=test.user,ou=people,dc=framework,dc=protegrity,dc=com'

modlist_to_add = [('uid', [b'test.user']), ('objectclass', [b'inetOrgPerson', b'posixAccount', b'top']), ('uidnumber', [b'1003']), ('gidnumber', [b'100']), ('homedirectory', [b'/home/test.user']), ('userpassword', [b'qwer1234']), ('givenname', [b'test']), ('sn', [b'user']), ('displayname', [b'test user']), ('loginshell', [b'/usr/local/sbin/manager']), ('cn', [b'test.user']), ('description', [b'testing']), ('pwdreset', [b'TRUE'])]

*********

But when I run this - ldapcon.add_s(dn_to_add, modlist_to_add)

The slapd service crashes and I get below error

 LDAP Failure: {'desc': "Can't contact LDAP server}