ipv4cn.py 文件源码

def derive_outwall(self):
        """
        This would not only inverse the set with the "big one", it would also exclude
        See: http://www.tcpipguide.com/free/t_IPReservedPrivateandLoopbackAddresses-3.htm
        """

        self.ipset_outwall = IPSet(['0.0.0.0/0']) - self.ipset_inwall - self.ipset_reserved
        self.cidrs_outwall = list(self.ipset_outwall.iter_cidrs())

        logging.info("Finished deriving out-wall IP table(s). Total: %i CIDR blocks.", len(self.cidrs_outwall), )