Excellent thank you I now have one on order. Does anyone know if the setup on the wiki is still current or given recent changes is there a new one?
Well, the text about MikroTik router setup on the wiki is not something you would want to do, as it only installs a single tunnel to UCSD, but at the bottom it refers to the YO2LOJ site and the script you can find there (get the latest version) and the directions for installing it are the way to go to get it on the IPIP mesh.
Of course you can use it in a lot of other ways (also at the same time), depending on the local radio network available. We use these routers (from their availability mostly RB750Gr3, before that some RB2011 and RB750 versions) as routers in our radio network as well, each running a couple of links to neighbors and using BGP as an autorouting protocol. In some areas it is also possible to setup a VPN to some nearby gateway that is on the mesh and/or is directly routed on Internet.
Rob