OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:7a:83:2a:34:3e:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:35:58:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:46:7d:52:e5:ff:14
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:be:7b:5a:73:ce:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:35:58:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
