Remove redundant imports

            Ipv4Packet,

            Ipv4Port, Ipv6Port 

    };

    import from LibIpv6_CommonRfcsDhcp_TypesAndValues all;

    import from LibIpv6_Rfc6334Dhcp_TypesAndValues all;

    import from LibIpv6_CommonRfcs_TypesAndValues {type Ipv6Address;}

    import from LibIpv6_Interface_TypesAndValues {type LibIpv6Node;}

    import from LibIpv6_CommonRfcsDhcp_TypesAndValues {type DHCPv6Msg, DomainName, DomainNameList;}

    import from LibIpv6_Rfc6334Dhcp_TypesAndValues {type AFTRNameOption;}

    import from LibIpv6_CommonRfcsDhcp_TypesAndValues all;

    // AtsCommon

    import from AtsCommon_TypesAndValues all;

    import from AtsCommon_DNS_CommonRfcs_TypesAndValues {type DnsMsg;}

    import from AtsCommon_Interfaces {

        type 

            DHCPv6Port, DNSPort, HttpPort, FtpPort, InterCompDataPort,

            DHCPv6Component, DNSComponent, UtComponent

    };

    import from AtsCommon_TypesAndValues all;

    // AtsDSLite

    import from AtsDSLite_TypesAndValues all;

            /**

             * @desc 

             * @member ipv6Port

             * @member ipv4Port

             * @member tc_ac

             * @member tc_noac

             * @member tc_wait

             */

            type component HostComponent extends UtComponent, LibIpv6Node, SelfSyncComp {

            } // End of component HostComponent

            /**

             * @desc 

             * @member aftrPort

             * @member tc_ac

             * @member tc_noac

             * @member tc_wait

             */

            type component AFTRComponent extends UtComponent, LibIpv6Node, SelfSyncComp {

            } // End of component AFTRComponent