First of all thanks for the extensive and fast answer. It is really helpful since I am now out of my usual Linux/BSD comfort zone
. Since I'm no programmer at all I am not sure if debugging even can help me, but I guess it will be worth a try.
For the next debugging step it will likely take some time since I have a lot of reading manpages, trying and compiling (on raspberry, cross-compiling is no options because of perl dependency
) to do.