OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9a:08:23:6d:e2:a9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ae:41:cb:db:62:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:8e:0b:fd:c7:d7:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:54:16:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:54:16:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
