Traceback (most recent call last):
  File "designate/tests/test_mdns/test_service.py", line 33, in setUp
    self.service = self.start_service('mdns')
  File "designate/tests/__init__.py", line 361, in start_service
    self.useFixture(fixture)
  File "/usr/lib/python2.7/dist-packages/testtools/testcase.py", line 645, in useFixture
    fixture.setUp()
  File "designate/tests/fixtures.py", line 59, in setUp
    self.svc.start()
  File "designate/service.py", line 243, in start
    self._service_config.tcp_backlog)
  File "designate/dnsutils.py", line 250, in bind_tcp
    sock_tcp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
  File "/usr/lib/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
error: [Errno 92] Protocol not available