OFPST_PORT reply (xid=0x2): 10 ports
  port 20: rx pkts=16, bytes=1620, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=10, bytes=1324, drop=0, errs=0, coll=0
  port  1: rx pkts=4, bytes=392, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=5, bytes=434, drop=?, errs=?, coll=?
  port  2: rx pkts=156, bytes=19962, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=126, bytes=18549, drop=?, errs=?, coll=?
  port 18: rx pkts=6, bytes=440, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=24, bytes=1512, drop=0, errs=0, coll=0
  port  9: rx pkts=2062, bytes=176497, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=808, bytes=88128, drop=?, errs=?, coll=?
  port 17: rx pkts=5, bytes=354, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=24, bytes=1512, drop=0, errs=0, coll=0
  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 19: rx pkts=16, bytes=1620, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=10, bytes=1346, drop=0, errs=0, coll=0
  port 15: rx pkts=16, bytes=1620, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=19, bytes=1836, drop=0, errs=0, coll=0
  port 16: rx pkts=16, bytes=1620, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=19, bytes=1814, drop=0, errs=0, coll=0
