Enabled the network layer to broadcast and emulate a 802.11 style L2 network
Update application.py

Fixed the way packets are consturcted
Update application.py

Kinda rollback
Update dsr.py

Fixed the way packets are constructed
Additions to support DSR Layer
Update dsr.py

Added a skeleton for route cache.
Init commit of cnet interface stuff. Needs hook-in to routing engine. Just a plain broadcast link layer with some collision avoidance