OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:8c:03:fd:b1:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:5d:13:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:3a:06:de:2a:a1:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:ce:69:ef:3d:63:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:5d:13:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
