OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e228f7-0): addr:42:df:88:3a:b2:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-239b50-0): addr:a2:6e:c4:1d:a8:f3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d2:98:10:33:75:92
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
