OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7a:7c:a5:02:fe:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:5e:5f:52:fe:31:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ee:84:ac:23:8e:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:f1:f9:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:f1:f9:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
