OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:32:0e:3f:ac:91:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:51:a8:bf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:56:4d:6a:3d:6d:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:7e:f4:0c:6c:1a:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:51:a8:bf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
