http://discuss.i2p/viewtopic.php?p=291
The current implementation uses a 5-record VTBM to build tunnels of 4 hops or less, and the 8-record TBM for longer tunnels. So as i understand it, it means that tunnel participants (if they assume you're running a standard i2p router, i.e. the 'current implementation') would be able to understand that the tunnel they're participating in fits one of these two cases: a) it is 4 hops or less, b) it is 5 hops or more, and they can't really be sure because they can't be sure that the tunnel...