OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-0d47b9-0): addr:b2:5e:98:8f:56:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-93d451-0): addr:62:21:f0:59:6f:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:f9:07:98:f1:50
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
