Network simulation

Refer to how Serval does it:

• https://otg-living.blogspot.com.au/2016/01/running-serval-in-core-network-simulator.html
• Written in CORE (Common Open Research Emulator) -- on Ubuntu it's core-network but on Arch it's core, and it seems to require Python 2
• Looks like it needs a full implementation of the network protocol, so this is the next priority