OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-a3066a-0): addr:ea:74:13:c1:8d:06
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b51f49-0): addr:aa:b8:31:8e:19:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 23(tapc7fafe2d-d6): addr:fe:16:3e:d2:1d:ac
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 29(tap62be049f-7c): addr:fe:16:3e:59:74:9c
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e2:da:b2:7a:d6:a8
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
