OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7a:19:61:b0:a3:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ba:a7:36:9c:e7:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a2:dc:d0:94:89:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:9e:25:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:9e:25:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
