1 - Validate configuration input errors, adding validation for input values, with
2 more descriptive messages if the user enters wrong values.
4 - Allows input error handling for values which are not strictly required. The
5 goal is avoid the annoying requirement to put "port" and "interval" at every
8 - QoS-Flags of the ping packets should be configurable.
10 - Make the configuration file reloadable (see bpdyndns).