OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:66:fb:33:a0:f4:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:d6:bb:4e:90:2e:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:86:e6:46:76:25:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:08:17:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:08:17:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
