OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-9cf807-0): addr:62:a4:b0:00:dd:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-89052e-0): addr:ae:19:c1:6a:96:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:f6:76:49:40:3c:96
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
