/// @warning Revert operation will rollback any changes to the staging
/// configuration (if it exists).
///
+ /// @warning This function requires that the entire previous configuration
+ /// is copied to the new configuration object. This is not working for
+ /// some of the complex configuration objects, e.g. subnets. Hence, the
+ /// "revert" operation is not really usable at this point.
+ ///
/// @param index A distance from the current configuration to the
/// past configuration to be reverted. The minimal value is 1 which points
/// to the nearest configuration.
/// an object passed as parameter. The configuration sequence is not
/// copied.
///
+ /// @warning Some of the configuration objects are not copied at
+ /// this point, e.g. subnets. This is because they contain quite complex
+ /// data structures and they make use of pointers, so in many cases
+ /// the default copy constructors can't be used. Implementing this
+ /// requires quite a lot of time so this is left as is for now.
+ /// The lack of ability to copy the entire configuration makes
+ /// revert function of the @c CfgMgr unsuable.
+ ///
/// @param [out] new_config An object to which the configuration will
/// be copied.
void copy(SrvConfig& new_config) const;