OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:c8:19:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:52:49:94:81:03:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:ea:31:fe:26:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:6e:10:4a:0f:31:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:c8:19:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
