Ability to specific bacnet network number

[pvandenberk]

Describe the requested feature

I have a network that involves a bacnet router that containes several virtual bacnet devices. These devices exist on network number 22011 instead of BAC0. I don't see a way to pass the 22011 in as a parameter to be able to read data from the virtual devices.

Motivation

This would allow the contrib-bacnet node able to handle more complicated systems that involve virtual devices or BBMDs.