The Control Panel's Network Settings menu is where you get detailed control over low-level cloud settings for networks, network zones, firewalls, resolvers. Refer to the sections below for more information.
To be able to provide IP addresses to the virtual servers you need to:
Create a network zone of the virtual type.
Create a network and specify the network zone you wish to assign it to.
Add an IP net to the new network.
Add IP ranges to the new IP net.