OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6e:0c:cc:91:c2:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:68:78:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3a:cf:b7:21:6a:99
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:22:54:a2:67:ac:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:68:78:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
