OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e8e721-0): addr:4a:0e:23:4f:df:7e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-ad4c1d-0): addr:6e:48:fd:b4:14:14
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:95:0f:4d:e9:73
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
