OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:e2:26:c1:7f:3f:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:c6:0c:2f:fd:f3:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(enp1s0): addr:52:54:00:dd:b8:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:f2:ca:d7:56:a2:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:dd:b8:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
