OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e61757-0): addr:a2:32:2e:cc:7f:84
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-77f798-0): addr:ae:d5:1a:56:ba:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:86:bc:f6:ef:76:16
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
