That one also piqued my interest. I am however still trying to understand what it gets you over something like OpenVPN. Maybe it is simply an alternative?
If I understood it correctly it would be an alternative to OpenVPN but without central server or configuration, you run meshbird on every node setting it up with a one liner.
I'm author of Meshbird. Big different between Tinc and Meshbird. When you start Tinc you have to specify other node addresses. When you start Meshbird you have to specify network secret key only. Meshbird's node will find each others automaticly.
[1]https://github.com/meshbird/meshbird