/**     * Reset the protocol version on an interface to its default value.     *      * @param vif_name the name of the vif to reset the protocol version of     * to its default value.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_proto_version(const string& vif_name,					string& error_msg);    /**     * Get the value of the flag that enables/disables the IP Router Alert     * option check per interface for received packets.     *      * @param vif_name the name of the vif to apply to.     * @param enabled the return-by-reference flag value.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		get_vif_ip_router_alert_option_check(const string& vif_name,						     bool& enabled,						     string& error_msg);        /**     * Enable/disable the IP Router Alert option check per interface for     * received packets.     *      * @param vif_name the name of the vif to apply to.     * @param enable if true, then enable the IP Router Alert option check,     * otherwise disable it.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		set_vif_ip_router_alert_option_check(const string& vif_name,						     bool enable,						     string& error_msg);        /**     * Reset the value of the flag that enables/disables the IP Router Alert     * option check per interface for received packets to its default value.     *      * @param vif_name the name of the vif to apply to.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_ip_router_alert_option_check(const string& vif_name,						       string& error_msg);    /**     * Get the Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the return-by-reference interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		get_vif_query_interval(const string& vif_name,				       TimeVal& interval,				       string& error_msg);        /**     * Set the Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		set_vif_query_interval(const string& vif_name,				       const TimeVal& interval,				       string& error_msg);        /**     * Reset the Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_query_interval(const string& vif_name,					 string& error_msg);    /**     * Get the Last Member Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the return-by-reference interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		get_vif_query_last_member_interval(const string& vif_name,						   TimeVal& interval,						   string& error_msg);        /**     * Set the Last Member Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		set_vif_query_last_member_interval(const string& vif_name,						   const TimeVal& interval,						   string& error_msg);        /**     * Reset the Last Member Query Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_query_last_member_interval(const string& vif_name,						     string& error_msg);    /**     * Get the Query Response Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the return-by-reference interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		get_vif_query_response_interval(const string& vif_name,						TimeVal& interval,						string& error_msg);        /**     * Set the Query Response Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param interval the interval.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		set_vif_query_response_interval(const string& vif_name,						const TimeVal& interval,						string& error_msg);        /**     * Reset the Query Response Interval per interface.     *      * @param vif_name the name of the vif to apply to.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_query_response_interval(const string& vif_name,						  string& error_msg);    /**     * Get the Robustness Variable count per interface.     *      * @param vif_name the name of the vif to apply to.     * @param robust_count the return-by-reference count value.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		get_vif_robust_count(const string& vif_name,				     uint32_t& robust_count,				     string& error_msg);        /**     * Set the Robustness Variable count per interface.     *      * @param vif_name the name of the vif to apply to.     * @param robust_count the count value.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		set_vif_robust_count(const string& vif_name,				     uint32_t robust_count,				     string& error_msg);        /**     * Reset the  Robustness Variable count per interface.     *      * @param vif_name the name of the vif to apply to.     * @param error_msg the error message (if error).     * @return XORP_OK on success, otherwise XORP_ERROR.     */    int		reset_vif_robust_count(const string& vif_name,				       string& error_msg);        //    // Debug-related methods    //        /**     * Test if trace log is enabled.     *      * This method is used to test whether to output trace log debug messges.     *      * @return true if trace log is enabled, otherwise false.     */    bool	is_log_trace() const { return (_is_log_trace); }        /**     * Enable/disable trace log.     *      * This method is used to enable/disable trace log debug messages output.     *      * @param is_enabled if true, trace log is enabled, otherwise is disabled.     */    void	set_log_trace(bool is_enabled) { _is_log_trace = is_enabled; }protected:    //    // IfMgrHintObserver methods    //    void tree_complete();    void updates_made();private:    /**     * A method invoked when the status of a service changes.     *      * @param service the service whose status has changed.     * @param old_status the old status.     * @param new_status the new status.     */    void status_change(ServiceBase*  service,		       ServiceStatus old_status,		       ServiceStatus new_status);    /**     * Get a reference to the service base of the interface manager.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     *     * @return a reference to the service base of the interface manager.     */    virtual const ServiceBase* ifmgr_mirror_service_base() const = 0;    /**     * Get a reference to the interface manager tree.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     *     * @return a reference to the interface manager tree.     */    virtual const IfMgrIfTree&	ifmgr_iftree() const = 0;    /**     * Initiate registration with the FEA.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     */    virtual void fea_register_startup() = 0;    /**     * Initiate registration with the MFEA.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     */    virtual void mfea_register_startup() = 0;    /**     * Initiate de-registration with the FEA.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     */    virtual void fea_register_shutdown() = 0;    /**     * Initiate de-registration with the MFEA.     *      * This is a pure virtual function, and it must be implemented     * by the communication-wrapper class that inherits this base class.     */    virtual void mfea_register_shutdown() = 0;    buffer_t	*_buffer_recv;		// Buffer for receiving messages        //    // Status-related state    //    size_t	_waiting_for_mfea_startup_events;    //    // A local copy with the interface state information    //    IfMgrIfTree	_iftree;        //    // Debug and test-related state    //    bool	_is_log_trace;		// If true, enable XLOG_TRACE()};//// Global variables////// Global functions prototypes//#endif // __MLD6IGMP_MLD6IGMP_NODE_HH__