OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ba:36:8b:12:69:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:9a:b0:0b:3d:26:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:46:86:87:52:8d:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:53:10:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:53:10:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
