Bad network file descriptor :: LDAP :: Bind

I establish the following LDAP connection with Net :: LDAP:

my $ldap = Net::LDAP->new( $ldap_host, version => 3 );
my $mesg = $ldap->start_tls(
    verify => 'none',
);

$mesg = $ldap->bind( $dn, password => $ldappass );

This will work, and even let me make a request later to verify the user credentials. But if I try to check the server certificate:

my $ldap = Net::LDAP->new( $ldap_host, version => 3 );
my $mesg = $ldap->start_tls(
    verify => 'require',
    cafile => '/var/certs/Certificate_Bundle.pem'
);

$mesg = $ldap->bind( $dn, password => $ldappass );

It successfully establishes a connection and verifies the server certificate , but when I try the Bind operation, I get the following LDAP message parameters:

    'resultCode' => 82,
    'pdu' => '0O`J3cn=foo1,ou=foo2,dc=foo3Passwd',
    'errorMessage' => 'Bad file descriptor'

I am surprised because the result code 82 is defined as LDAP_LOCAL_ERROR, but the whole bit of the certificate seems to work. If I change the cafile parameter to the wrong value, it will end with the error message "I / O error reset by peer".

Any ideas? Thanks in advance.

: , . LDAP , , . , , openssl :

openssl s_client -connect *server:port* -showcerts -state

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