When creating an Alibaba Cloud VPC, you must specify Intranet network segments used in the VPC with a CIDR Block. This CIDR Block can later be modified after the VPC is created.
Once a VPC is created in Alibaba Cloud, its CIDR Block cannot be modified. This design ensures stability and network consistency within the VPC. To change the network range, a new VPC would need to be created with the desired CIDR Block.
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