I found something. I have no /dev/lirc device, only a /dev/lircd

Do I understand Irreco?

now:
PC, controlled with IR remote

wish:
PC, controlled with N810/Irreco

If I have a client/server combination, it's following:
PC1 ("client") with IR receiver / remote attached: lircd -l -H pinsys
PC2 ("server", controlled from PC1): lircd -c <IP of PC1> -H udp

With Irreco (and following your documentation), my PC acts like PC1!?
But this isn't what I want. My PC should act like PC2, it should be controllable from Irreco.
So my question is again: do I have understand Irreco? I think, I want something different...