[lime-users] Control which mesh nodes can connect

Hi, I love this project and have already set up a local mesh with a few routers. My concern is that I want to be able to control who adds nodes to the mesh, from what I can tell, just having a flashed router set up with the correct Mesh ID adds it to the routing table, which is a worry if you want a more controlled roll-out, i.e. how do you stop a malicious actor adding a mesh router and just sniffing all the packets (assuming nobody uses VPN or TLS of course, it's hypothetical)? I tried to set up an encrypted mesh with 802.11s but the mesh netowrks vanished after adding he packages and configuration change, I assume because of the two-rdio issue described elsewhere. I was wondering if something simpler, like a MAC whitelist or a node IP whitelist is possible to simply make the network growth a bit more manageable? I understand this goes against the "Libre" principle, and may not be viable with a distributed network, but given I do not have the netowrk skill to figure this out on my lonesome I thought I'd ask. Cheers, Martin