OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8e:88:29:e9:46:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:ed:ea:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:36:4a:bd:3a:6c:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:fe:18:53:4f:d3:d6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:ed:ea:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
