OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:44:25:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ee:ee:f9:4e:f0:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:96:b3:b8:59:51:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:a2:de:fe:65:07:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:44:25:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
