OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:d5:3c:a7:b9:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:5a:57:42:0c:45:f1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9a:e9:f5:20:d4:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(enp1s0): addr:52:54:00:d3:04:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:d3:04:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
