OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b6:e7:af:b1:31:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:9a:05:d8:1d:ca:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:e2:25:9d:e9:e6:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:81:49:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:81:49:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
