OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c6:25:06:37:a2:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:ea:86:b8:9f:70:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:8a:11:08:41:fa:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:73:79:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:73:79:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
