OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:0a:c1:b9:ab:0f:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:c4:1d:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:1a:48:37:91:83:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:2e:1c:86:aa:8c:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:c4:1d:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
