OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1e:f1:e8:97:74:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:62:8e:53:80:14:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c2:0c:c2:ba:1a:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:83:13:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:83:13:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
