To create new IP addresses in a private network do these steps.
Go to myCloud → Virtual datacenters → optionally
Optionally, select a virtual datacenter or All
Go to Networks → Private → select
Select a private network
On the Private IPs page, click the add + button and enter details
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Go to Virtual datacenters → Edit edit VM → Network
Click the add + button and enter details (or drag the Auto-generated IP label into the Network pane)
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When you add IPv6 addresses on strict networks, you don't need to set the starting address. On non-strict IPv6 networks, Abiquo recommends we recommend that you create an automatic IP address, or you can enter a From IP address manually.