OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:86:9c:a3:a8:3a:f7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:62:a8:24:f7:e6:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:82:6b:b3:60:5c:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:84:f5:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:84:f5:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
