VPN / Traffic Separation use case

**Description**
The main scope is to get VPN/Traffic separation and end to end external connectivity by dedicating a specific interface to application pods. The additional interface in the pods must be externally accessible using a VIP (Virtual IP) address.

**How**
Distributed Bridge domain Network Service will establish point to point connection to all application pods using bridge. A Network Service Endpoint (Layer 3 Forwarder NSE) with loadbalancing functionality could loadbalance the incoming traffic from Gateway router to the application pods via Bridge Domain NSE. Test bed could use software router to simulate gateway router. The Gateway router will ECMP the incoming traffic to nodes with L3 forwarder NSE.