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Presently we can add multiple guest IP ranges within the same subnet in Basic Zone and Advanced sg enabled zones, but we cannot add IP ranges form different subnets.This feature provides this functionality for adding guest IP ranges from different subnets in Basic zone and advanced SG enabled networks. In case Advanced sg enabled network adding ip range to a sg enabled network form different subnet implies we add two or more subnets in the same vlan.

Use case:

There may be cases where admin may want to add more IP address once the old ones are exhausted. Admin may want to add the IP ranges form the same subnet or from different one. Currently in cloudstack there is no flexibility to do this for guest IP ranges.

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presently the createVlanIpRange API is used to add the guest IP range to a network (shared) in basic zone. The IPs mentioned in this range are assigned to the guest VMs. These are public IPs and allow guest to communicate with the internet. Presently we can add multiple ranges form the same subnet but not from a different one. This feature will extend the createVlanIpRange to add guest IPs from a different subnet, to a shared network in basic zone.
In the present implementation one subnet can have only one gateway. we do no allow overlapping subnets.

APIs:

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