OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-325727-0): addr:1a:92:ed:30:af:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-e70d77-0): addr:8e:33:c8:5c:d0:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b6:fe:07:8f:5c:9d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
