OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5e:e2:88:e8:92:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(enp1s0): addr:52:54:00:2f:a1:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:7a:d6:82:3d:f5:92
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:96:8d:e5:ab:33:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:2f:a1:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
