OFPST_PORT reply (xid=0x2): 4 ports
  port  1: rx pkts=0, bytes=0, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=9, bytes=1218, drop=?, errs=?, coll=?
  port  2: rx pkts=35, bytes=2770, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=53, bytes=3966, 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=33, bytes=3526, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=80, bytes=6595, drop=?, errs=?, coll=?
