OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:ee:51:7c:57:9f:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:10:f2:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:0a:27:80:39:a9:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:72:6d:c2:8a:a2:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:10:f2:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
