OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:46:42:bf:66:9f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:b6:c1:a7:a0:70:43
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3e:fe:0c:a5:05:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:29:33:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:29:33:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
