When running the neutron.tests.unit.openvswitch.test_ovs_tunnel. TunnelTestWithMTU unit test failure occurs because the udevadm is timing out waiting on a mock-ed device. Co-Authored-By: Salvatore Orlando <salv.orlando@gmail.com> Change-Id: I0e16295be66513c2257831bf62fd6a0c19f3b8a4 Closes-Bug: #1253506