https://bugs.openldap.org/show_bug.cgi?id=9287
--- Comment #4 from happy mu happy.mu@nokia-sbell.com --- (In reply to Quanah Gibson-Mount from comment #2)
This sounds like a DNS issue rather than a mutex issue.
If it is a mutex issue, you should be able to provide a stack trace demonstrating that case.
root cause: The gethostbyname_r() function is deprecated; applications should use getaddrinfo() instead.
we test that it works if use getaddrinfo.