OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-d2763d-0): addr:22:98:33:c1:38:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-84d7c6-0): addr:46:05:ef:7e:e4:e6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(tap7c670d44-2c): addr:fa:16:3e:3f:e2:35
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1a:dd:bd:1d:f7:4c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
