Amazon Web Services (AWS) announces the launch of multiple IPv6 classless inter-domain routing (CIDR) blocks in a Virtual Private Cloud (VPC), enabling customer to attach up to 5 prefixes to their VPCs. Before today, customers could add up to 5 IPv4 CIDR blocks and 1 IPv6 block. With this new feature, customers can now use multiple blocks to build logical separation within their VPCs with independent CIDR blocks. CIDR blocks can be associated from the Amazon provided pool and/or a pool of bring-your-own IPv6 addresses.
Source:: Amazon AWS