You can assign a new, system-created IP address to an existing server.
Existing IP addresses that have not been assigned to a server yet, can be:
assigned to a server that you create in the future,
assigned to a server without an assigned IP address.
Select the desired server.
In the top menu, click Network > Assign IP.
The system displays an information window.
Select the IP address type to be assigned to the server.
An IP address of the desired type is assigned to the server.