OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:23:c7:b0:a3:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:42:24:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:be:0a:7f:34:10:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:9a:51:e7:c7:22:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:42:24:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
