vyatta-cjdns is a wrapper for the cjdns software to run on the Ubiquiti EdgeRouter platform, including the EdgeRouter X and EdgeRouter Lite, as well as VyOS.
cjdns is an experimental network routing suite designed to create a fully routable mesh network with end-to-end encryption. More information about cjdns is available here.
It is open-source and available on GitHub.
This software has not been tested and is available without warranty. I'll try and do the best I can to support it though - if you have a problem, then raise an issue on GitHub.