OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:6e:6e:4e:c1:79:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:5a:4b:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:0a:9c:e8:e5:be:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:a2:6b:34:bd:da:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:5a:4b:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
