This appears to break FreeIPA. Log tarball here. Errors:

2018-10-10T00:33:21Z DEBUG Created connection context.ldap2_140439322452600
2018-10-10T00:33:21Z DEBUG flushing ldapi://%2fvar%2frun%2fslapd-DOMAIN-LOCAL.socket from SchemaCache
2018-10-10T00:33:21Z DEBUG retrieving schema for SchemaCache url=ldapi://%2fvar%2frun%2fslapd-DOMAIN-LOCAL.socket conn=<ldap.ldapobject.SimpleLDAPObject object at 0x7fba93ed6240>
2018-10-10T00:33:21Z DEBUG add_entry_to_group: dn=uid=ipara,ou=People,o=ipaca group_dn=cn=Certificate Manager Agents,ou=groups,o=ipaca member_attr=uniqueMember
2018-10-10T00:33:21Z DEBUG Unhandled LDAPError: PROTOCOL_ERROR: {'desc': 'Protocol error'}
2018-10-10T00:33:21Z DEBUG Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1007, in error_handler
    yield
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1492, in find_entries
    raise e
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1452, in find_entries
    result = self.conn.result3(id, 0)
  File "/usr/lib64/python3.6/site-packages/ldap/ldapobject.py", line 714, in result3
    resp_ctrl_classes=resp_ctrl_classes
  File "/usr/lib64/python3.6/site-packages/ldap/ldapobject.py", line 721, in result4
    ldap_result = self._ldap_call(self._l.result4,msgid,all,timeout,add_ctrls,add_intermediates,add_extop)
  File "/usr/lib64/python3.6/site-packages/ldap/ldapobject.py", line 294, in _ldap_call
    result = func(*args,**kwargs)
ldap.PROTOCOL_ERROR: {'desc': 'Protocol error'}

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/ipaserver/install/service.py", line 520, in start_creation
    run_step(full_msg, method)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/service.py", line 510, in run_step
    method()
  File "/usr/lib/python3.6/site-packages/ipaserver/install/cainstance.py", line 803, in __create_ca_agent
    conn.add_entry_to_group(user_dn, group_dn, 'uniqueMember')
  File "/usr/lib/python3.6/site-packages/ipaserver/plugins/ldap2.py", line 406, in add_entry_to_group
    entry = self.get_entry(dn, [''])
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1549, in get_entry
    size_limit=size_limit, get_effective_rights=get_effective_rights,
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1361, in get_entries
    **kwargs)
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1499, in find_entries
    break
  File "/usr/lib64/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1073, in error_handler
    raise errors.DatabaseError(desc=desc, info=info)
ipalib.errors.DatabaseError: Protocol error:

2018-10-10T00:33:21Z DEBUG   [error] DatabaseError: Protocol error: 
2018-10-10T00:33:21Z DEBUG   File "/usr/lib/python3.6/site-packages/ipapython/admintool.py", line 174, in execute
    return_value = self.run()
  File "/usr/lib/python3.6/site-packages/ipapython/install/cli.py", line 319, in run
    return cfgr.run()
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 364, in run
    return self.execute()
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 389, in execute
    for rval in self._executor():
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 434, in __runner
    exc_handler(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 463, in _handle_execute_exception
    self._handle_exception(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 453, in _handle_exception
    six.reraise(*exc_info)
  File "/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
    raise value
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 424, in __runner
    step()
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 421, in <lambda>
    step = lambda: next(self.__gen)
  File "/usr/lib/python3.6/site-packages/ipapython/install/util.py", line 81, in run_generator_with_yield_from
    six.reraise(*exc_info)
  File "/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
    raise value
  File "/usr/lib/python3.6/site-packages/ipapython/install/util.py", line 59, in run_generator_with_yield_from
    value = gen.send(prev_value)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 658, in _configure
    next(executor)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 434, in __runner
    exc_handler(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 463, in _handle_execute_exception
    self._handle_exception(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 521, in _handle_exception
    self.__parent._handle_exception(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 453, in _handle_exception
    six.reraise(*exc_info)
  File "/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
    raise value
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 518, in _handle_exception
    super(ComponentBase, self)._handle_exception(exc_info)
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 453, in _handle_exception
    six.reraise(*exc_info)
  File "/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
    raise value
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 424, in __runner
    step()
  File "/usr/lib/python3.6/site-packages/ipapython/install/core.py", line 421, in <lambda>
    step = lambda: next(self.__gen)
  File "/usr/lib/python3.6/site-packages/ipapython/install/util.py", line 81, in run_generator_with_yield_from
    six.reraise(*exc_info)
  File "/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
    raise value
  File "/usr/lib/python3.6/site-packages/ipapython/install/util.py", line 59, in run_generator_with_yield_from
    value = gen.send(prev_value)
  File "/usr/lib/python3.6/site-packages/ipapython/install/common.py", line 65, in _install
    for unused in self._installer(self.parent):
  File "/usr/lib/python3.6/site-packages/ipaserver/install/server/__init__.py", line 583, in main
    master_install(self)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/server/install.py", line 250, in decorated
    func(installer)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/server/install.py", line 812, in install
    ca.install_step_0(False, None, options, custodia=custodia)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/ca.py", line 303, in install_step_0
    use_ldaps=standalone)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/cainstance.py", line 466, in configure_instance
    self.start_creation(runtime=runtime)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/service.py", line 520, in start_creation
    run_step(full_msg, method)
  File "/usr/lib/python3.6/site-packages/ipaserver/install/service.py", line 510, in run_step
    method()
  File "/usr/lib/python3.6/site-packages/ipaserver/install/cainstance.py", line 803, in __create_ca_agent
    conn.add_entry_to_group(user_dn, group_dn, 'uniqueMember')
  File "/usr/lib/python3.6/site-packages/ipaserver/plugins/ldap2.py", line 406, in add_entry_to_group
    entry = self.get_entry(dn, [''])
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1549, in get_entry
    size_limit=size_limit, get_effective_rights=get_effective_rights,
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1361, in get_entries
    **kwargs)
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1499, in find_entries
    break
  File "/usr/lib64/python3.6/contextlib.py", line 99, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/lib/python3.6/site-packages/ipapython/ipaldap.py", line 1073, in error_handler
    raise errors.DatabaseError(desc=desc, info=info)

2018-10-10T00:33:21Z DEBUG The ipa-server-install command failed, exception: DatabaseError: Protocol error: 
2018-10-10T00:33:21Z ERROR Protocol error: 
2018-10-10T00:33:21Z ERROR The ipa-server-install command failed. See /var/log/ipaserver-install.log for more information