http://idk.i2p/javadoc-i2p/net/i2p/router/MultiRouter.html
Additionally, two other properties might be useful: i2p.vmCommSystem=true The first line tells the router to use an in-VM comm system for sending
messages back and forth between routers (see net.i2p.transport.VMCommSystem).
To make the router console work, either run from a directory containing
lib/, webapps/, docs/, etc., or point i2p.dir.base to a directory containing the
above.