OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:4d:3e:fa:ae:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:09:cd:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:1a:65:be:41:85:66
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:de:b2:20:e7:6a:98
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:09:cd:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
