repeater
	purpose: operates on a remote host commonly accessible
	frequency: continuous once started
	order: start first
	one per network

rx
	purpose: receives packets from repeater and writes to stdout
	frequency: continuous once started
	order: start after repeater
	up to MAXSLOTS

tx
	purpose: sends packets from stdin to the repeater
	frequency: on demand
	order: start after repeater
	unlimited