OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b6:50:da:21:02:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:82:8e:33:d5:99:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:f6:13:cc:1d:95:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:4c:98:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:4c:98:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
