OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:9c:d5:1d:26:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:52:17:a5:e1:35:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:fa:af:e5:ba:47:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:14:ac:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:14:ac:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
