Hi Jaymin, BACnet4Linux is a project I started 15 years ago when I was in the learning phase of BACnet. For a few years, a small group of us maintained the project and added to it. However, that transitioned over to a new project: http://bacnet.sourceforge.net/ Which is still being maintained and improved. I'd suggest you check it out. BACnet4Linux did work, but I suspect the problem is that the kernel interface for a raw Ethernet socket has changed, and the old method deprecated. That's actually...