OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-7ffc17-0): addr:f2:60:7c:bc:a3:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3a:26:5e:98:f4:06
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
