OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b97b95-0): addr:f6:96:50:84:91:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b7e37f-0): addr:0e:03:a6:04:ec:ac
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-1ee259-0): addr:ae:bc:5d:25:c8:cc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:c6:38:fc:e3:57:fc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
