IPv6 is fast-becoming the norm given its 128 bits for address space. This makes it handy for the growing areas of IoT and online devices. As such, AWS is announcing that it will now support IPv6 for both its Virtual Private Cloud and EC2 instances in VPNs–completely free. This service will begin for US East (Ohio) and will continue to roll out for other regions.
To enable IPv6, simply select it from the CDR block option at the Console screen when creating a new VPC. You may also select it for existing VPCs.
Each VPC created gets its own /56 address prefix from inside Amazon’s Global Unicast Address. You may now assign as /64 address prefix to each subnet within your VPC.
Another noteworthy feature is that the Direct Connect Console allows you to create VIFs (Virtual interfaces) with support for both IPv4 or IPv6. You simply select which one in the creation screen.
Lastly, AWS also announced an Egress-only Internet Gateway where you can generate private subnets within your VPN. The EIG allows you to block incoming traffic to your VPC while allowing outgoing traffic. You can even use it to restrict IPv6 inbound traffic. This service is free.
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