To use the example app:
Push two differently named instances of the app
cd ~/workspace/cf-networking-release/src/example-apps/proxy
cf push appA
cf push appB
See that they are reachable and what their IPs are
curl appa.<system-domain>
curl appb.<system-domain>
See that proxying from A to B works over both the router and overlay
curl appa.<system-domain>/proxy/appb.<system-domain>
curl appa.<system-domain>/proxy/<overlay-ip-of-appB>:8080