OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7a:ef:55:d5:46:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:7b:bd:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:16:c9:a0:88:30:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:0e:5c:f2:91:8f:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:7b:bd:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
