OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:86:d6:53:35:26:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:22:59:f1:b7:ab:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:a6:b3:01:62:15:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:5e:f4:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:5e:f4:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
