OFPST_PORT reply (xid=0x2): 3 ports
  port  1: rx pkts=0, bytes=0, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=6, bytes=510, drop=?, errs=?, coll=?
  port  4: rx pkts=140, bytes=12746, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=86, bytes=7774, drop=?, errs=?, coll=?
  port LOCAL: rx pkts=0, bytes=0, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=0, bytes=0, drop=0, errs=0, coll=0
