OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:aa:f1:6a:f7:5d:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:8f:0b:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:76:fc:3f:d9:2c:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:0a:c9:3d:79:a7:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:8f:0b:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
