By default, every Amazon ECS task on Fargate is provided an elastic network interface (ENI) with a primary private IP address. When using a public subnet, you can optionally assign a public IP address to the task's ENI. If your VPC is configured for dual-stack mode and you use a subnet with an IPv6 CIDR block, your task's ENI also receives an IPv6 address. A task can only have one ENI that's assoc