I'm experimenting with SITL, for the purpose of routing MAVLink and prototyping IP Telemetry. Anyhow, after reading the documentation here...:
It took me a while to figure out how everything connects. To help myself, I made an architecture diagram. I would like some feedback from anyone who knows SITL. I got it working, so I think it is correct
The original diagram is in Google Docs, feel free to edit, copy or improve
Once I confirm this is correct, I will submit it for inclusion in the wiki.