OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d2:d9:aa:eb:33:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:be:29:15:7f:c0:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:7a:88:4a:1e:9b:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:3a:dd:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:3a:dd:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
