OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:64:30:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:92:85:c7:36:35:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9e:68:59:c3:85:60
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:da:df:9b:db:1a:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:64:30:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
