OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b2:d6:86:0f:71:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:8e:1b:26:bb:83:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9e:2d:93:0e:61:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:64:31:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:64:31:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
