OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-170ec8-0): addr:aa:3b:87:d9:b3:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-eb059b-0): addr:b2:66:37:7a:e1:b5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-8fb585-0): addr:8a:64:97:37:4a:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:16:eb:a6:7b:d5:56
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
