OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:ee:01:06:3e:7f:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:6a:19:0b:d6:47:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a2:55:d0:fb:bd:f3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:e6:0c:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:e6:0c:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
