OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:90:7f:bc:53:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:d6:93:a1:3e:aa:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:16:86:e9:28:db:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:83:75:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:83:75:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
