OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7e:54:36:e3:61:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:4e:24:8a:99:6e:7e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:56:12:e5:bf:74:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:df:b7:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:df:b7:2c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
