wallace fails to connect to ldap then running in debug 9 mode
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Description

Upgraded to Kolab 16.1 on Centos 7
wallace-0.8.7-1.1.el7.kolab_16.noarch
We have this in /etc/sysconfig/walalce

FLAGS="--fork -l debug -d 9"
DAEMONOPTS="--user kolab"

Create or change event in calendar with booked rresource. This is in /var/log/kolab/pykolab.log.

2017-01-02 11:04:48,728 pykolab.auth DEBUG [6268]: Connecting to LDAP...
2017-01-02 11:04:48,729 pykolab.auth DEBUG [6268]: Attempting to use LDAP URI ldap://localhost:389
2017-01-02 11:04:48,729 pykolab.auth DEBUG [6268]: Binding with bind_dn: uid=kolab-service,ou=Special Users....
2017-01-02 11:04:48,731 pykolab.auth DEBUG [6268]: Searching with filter '(&(associatedDomain=domain))'
2017-01-02 11:04:48,731 pykolab.auth ERROR An error occured using _regular_search: IOError(32, 'Broken pipe')
2017-01-02 11:04:48,732 pykolab.auth ERROR Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/pykolab/auth/ldap/__init__.py", line 3065, in _search
    secondary_domains
  File "<string>", line 10, in <module>
  File "/usr/lib/python2.7/site-packages/pykolab/auth/ldap/__init__.py", line 2963, in _regular_search
    (_result_type, _result) = self.ldap.result(_search, False, 0)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 458, in result
    resp_type, resp_data, resp_msgid = self.result2(msgid,all,timeout)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 462, in result2
    resp_type, resp_data, resp_msgid, resp_ctrls = self.result3(msgid,all,timeout)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 469, in result3
    resp_ctrl_classes=resp_ctrl_classes
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 476, in result4
    ldap_result = self._ldap_call(self._l.result4,msgid,all,timeout,add_ctrls,add_intermediates,add_extop)
  File "/usr/lib64/python2.7/site-packages/ldap/ldapobject.py", line 92, in _ldap_call
    pprint.pformat((args,kwargs))
IOError: [Errno 32] Broken pipe

The issue never occurs running with debug mode 8 or less