TODO (general):
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- integrate system dependent code for system call route ...
- debug - class;
- create a method which returns a representation of the buffer dependent on the type (enum, ipaddr, string, integer)
- get the NAS ip address automatically from the system
	-> help: find the right interface which knows the route to the radius server!
	-> or create a /32-interface which is routed in the network, so it is always the same
- improve the parsing of framed routes and netmask
- set routes over a socket and not over system (route add -net ...)
- set timeouts for the ipc socket send and receive methods
- exceptionhandling with try and catch
- create a routing and ip class with correctness checking
- read config options from OpenVPN: 
	- topology option
	- get to know if no certificates are used
	- check if preconditions are ok
- different status file version 
- OpenBSD compatible
- send commonname to RADIUS server
- vsascript call also at authentication