OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:1e:22:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:9a:49:24:b0:40:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:82:ea:8b:e3:27:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:1e:b3:25:f4:27:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:1e:22:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
