/usr/sbin/ipa-server-install --setup-dns --zonemgr=root@localhost.localdomain ...
Traceback (most recent call last):
  File "/usr/sbin/ipa-server-install", line 1382, in <module>
    safe_options, options = parse_options()
  File "/usr/sbin/ipa-server-install", line 309, in parse_options
    options, args = parser.parse_args()
  File "/usr/lib64/python2.7/optparse.py", line 1400, in parse_args
    stop = self._process_args(largs, rargs, values)
  File "/usr/lib64/python2.7/optparse.py", line 1440, in _process_args
    self._process_long_opt(rargs, values)
  File "/usr/lib64/python2.7/optparse.py", line 1515, in _process_long_opt
    option.process(opt, value, values, self)
  File "/usr/lib64/python2.7/optparse.py", line 789, in process
    self.action, self.dest, opt, value, values, parser)
  File "/usr/lib64/python2.7/optparse.py", line 809, in take_action
    self.callback(self, opt, value, parser, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/ipaserver/install/bindinstance.py", line 406, in zonemgr_callback
    validate_zonemgr_str(value)
  File "/usr/lib/python2.7/site-packages/ipalib/util.py", line 280, in validate_zonemgr_str
    return validate_zonemgr(zonemgr)
  File "/usr/lib/python2.7/site-packages/ipalib/util.py", line 273, in validate_zonemgr
    assert isinstance(zonemgr, DNSName)
AssertionError