Active Net Issues
	• Security – Need to prevent adverse functions – Approaches include strict semantics (SecuNet), polices (Android/FAIN), and ‘sandboxes’ (execution environments) • Performance – ‘Slow path’ for option-filled data packets in routers – Lack of inter-layer information leads to… • Redundant functions between layers (e.g., Application layer routing/discovery) • Sub-optimal performance of end-to-end flows