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Description of problem:
Replication doesnt work between two masters when we use nsDS5ReplicaTransportInfo: TLS and nsDS5ReplicaBindMethod: SSLCLIENTAUTH.
The issue can be reproduced with the next test case:
dirsrvtests/tests/suites/sasl/regression_test.py::test_openldap_no_nss_crypto

Version tested:
389-ds-base: 1.3.7.5-9.el7

Additional info:
/var/log/dirsrv/slapd-master2/errors has errors like these:

[23/Nov/2017:11:28:50.802980616 -0500] - ERR - slapi_ldap_bind - Error: could not bind id [(anon)] authentication mechanism [EXTERNAL]: error 48 (Inappropriate authentication)
[23/Nov/2017:11:28:50.804420121 -0500] - ERR - NSMMReplicationPlugin - bind_and_check_pwp - agmt="cn=meTo_localhost:39001" (localhost:39001) - Replication bind with EXTERNAL auth failed: LDAP error 48 (Inappropriate authentication) (missing client certificate)

Also, the test case passes on 1.3.6.1-16.el7.

Upstream ticket:
https://pagure.io/389-ds-base/issue/49478

*** This bug has been marked as a duplicate of bug 1516409 ***