OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:42:9d:9e:78:58:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c6:98:8c:99:b7:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c2:a8:9f:19:c6:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:b9:b6:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:b9:b6:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
