OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-cafd13-0): addr:9a:d8:17:81:98:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-4fd585-0): addr:b6:f4:3b:29:03:93
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-e9dadf-0): addr:42:5e:5a:aa:88:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b6:c9:28:d8:5b:0e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
