error_t ndpCheckOptions(const uint8_t *options, size_t length)
{
   size_t i;
   NdpOption *option;

   //Point to the very first option of the NDP message
   i = 0;

   //Parse options
   while((i + sizeof(NdpOption)) <= length)
   {
      //Point to the current option
      option = (NdpOption *) (options + i);

      //Nodes must silently discard an NDP message that contains
      //an option with length zero
      if(option->length == 0)
         return ERROR_INVALID_OPTION;

      //Jump to next the next option
      i += option->length * 8;
   }

   //The Options field is valid
   return NO_ERROR;
}
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.