OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:36:49:d9:f8:eb:92
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:da:cb:9a:9a:f0:d1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:46:b9:71:96:57:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:ea:ec:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:ea:ec:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
