OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:9f:61:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ce:5a:d3:e6:56:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:4a:bb:c9:85:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:aa:79:c0:67:ba:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:9f:61:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
