OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ac6eca-0): addr:de:cf:45:57:80:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-780dfa-0): addr:6e:40:69:d1:5c:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d2:4f:cc:62:48:13
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
