def _nat_rules_for_internet_access(self, acl_no, network, netmask,<EOL>inner_itfc, outer_itfc, vrf_name):
pass<EOL>
Configure the NAT rules for an internal network.

        :param acl_no: ACL number of the internal network.
        :param network: internal network
        :param netmask: netmask of the internal network.
        :param inner_itfc: (name of) interface connected to the internal
        network
        :param outer_itfc: (name of) interface connected to the external
        network
        :param vrf_name: VRF corresponding to this virtual router
        :return: True if configuration succeeded
        :raises: networking_cisco.plugins.cisco.cfg_agent.cfg_exceptions.
        IOSXEConfigException