OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:06:af:2c:8b:9f:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:d4:4d:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:32:2b:4b:27:9d:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:da:77:15:ae:1e:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:d4:4d:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
