OFPST_PORT reply (xid=0x2): 5 ports
  port  1: rx pkts=0, bytes=0, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=7, bytes=1086, drop=?, errs=?, coll=?
  port  2: rx pkts=25, bytes=2482, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=29, bytes=2688, drop=0, errs=0, coll=0
  port  4: rx pkts=589, bytes=88356, drop=?, errs=?, frame=?, over=?, crc=?
           tx pkts=504, bytes=71130, 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=15, bytes=774, drop=0, errs=0, frame=0, over=0, crc=0
           tx pkts=8, bytes=832, drop=0, errs=0, coll=0
