OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:e2:af:1a:96:ae:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:c2:e5:3a:4a:f5:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b6:27:e9:17:46:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:f2:5e:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:f2:5e:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
