OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9e:98:3f:6b:32:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:b2:b1:93:4f:cf:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:3e:08:95:0f:71:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:ae:61:d7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:ae:61:d7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
