def check_arp_header_match():
    result = checks.arp_header_match_supported()
    if not result:
        LOG.error(_LE('Check for Open vSwitch support of ARP header matching '
                      'failed. ARP spoofing suppression will not work. A '
                      'newer version of OVS is required.'))
    return result

 def setUp(self):
     if not checks.arp_header_match_supported():
         self.skipTest("ARP header matching not supported")
     # NOTE(kevinbenton): it would be way cooler to use scapy for
     # these but scapy requires the python process to be running as
     # root to bind to the ports.
     super(ARPSpoofTestCase, self).setUp()
     self.src_addr = '192.168.0.1'
     self.dst_addr = '192.168.0.2'
     self.src_ns = self._create_namespace()
     self.dst_ns = self._create_namespace()
     self.src_p = self.useFixture(
         net_helpers.OVSPortFixture(self.br, self.src_ns.namespace)).port
     self.dst_p = self.useFixture(
         net_helpers.OVSPortFixture(self.br, self.dst_ns.namespace)).port

 def skip_without_arp_support(self):
     if not checks.arp_header_match_supported():
         self.skipTest("ARP header matching not supported")

 def test_arp_header_match_runs(self):
     checks.arp_header_match_supported()