TIdRipHdr = packed record
  rip_cmd: byte;
  rip_ver: byte;
  rip_rd: word;
  rip_af: word;
  rip_rt: word;
  rip_addr: longword;
  rip_mask: longword;
  rip_next_hop: longword;
  rip_metric: longword;
  end;