By default, when you stop a running vApp or power off a virtual machine, vCloud Director releases any IP and MAC addresses the virtual machines were using. You can configure a vApp to retain the network addresses of its virtual machines until the vApp, VM, or network is deleted.

Static routing relies on the IP addresses of the virtual machines and virtual routers in a vApp. For vApps that use static routing, enable IP persistence to make sure that static routes to and from the vApp remain valid.

Procedure
1

Click My Cloud.

2

In the left pane, select vApps.

3

Select a vApp, right-click, and select Open.

4

On the Networking tab, select the Always use assigned IP addresses... check box and click Apply.

The virtual machines in the vApp keep their assigned IP and MAC addresses, even when they are powered off.