OFPST_PORT reply (xid=0x2): 4 ports
  port  1: rx pkts=46, bytes=4572, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=65, bytes=5610, drop=?, errs=?, coll=?
  port  2: rx pkts=0, bytes=0, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=0, bytes=0, 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
  port  3: rx pkts=101, bytes=8002, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=46, bytes=4456, drop=?, errs=?, coll=?
