OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-cceb21-0): addr:ae:31:0d:90:b0:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-00fb02-0): addr:d2:17:fd:29:50:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:be:77:d1:b1:ac:dd
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
