spec for l3 networking
spec for l3 networking

1. What is the problem
In the current l3 networking model, the host route will be only valid
after DHCP lease time expired, and renewed.

2. What is the solution for the problem
To overcome the drawbacks, a new l3 netowrking model is introduced in
this spec.

3. What features need to be implemented to the Tricircle to
realize the solution
N/A

Change-Id: I963253e9ce325f4a94cfb69d482404dc2c12f34e

stackforge/tricircle,openstack/tricircle,openstack/tricircle,stackforge/tricircle