OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9a:22:3a:e7:71:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:97:7a:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:0e:e9:4a:f9:a1:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:2a:e3:49:a9:ec:a8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:97:7a:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
