OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9e:33:47:ee:15:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:96:07:d4:36:bd:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:16:79:a7:7c:8d:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:0b:3d:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:0b:3d:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
