OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:4a:2c:47:a1:f7:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:8a:14:5e:e5:9b:0e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:c6:3f:cd:bb:57:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:42:46:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:42:46:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
