THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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With createNetworkOffering API, we can specify the set of network services and capabilities of network service that will provided when network is created using the network offering. A capability of Static NAT service will be the right place to provide the admin to make a choice to allocate a public IP by default or not. A new capability 'AssociatePublicIP' will be introduced to set of network service capabilities provided by the CloudStack.