OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:a6:f7:ca:c0:1d:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:7c:6e:59:66:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:2e:ea:5a:63:65:29
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:23:bf:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:23:bf:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
