OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ca:19:f0:9b:92:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:86:09:ec:13:5f:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f6:65:69:52:61:d7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:f5:93:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:f5:93:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
