Amazon ECS Introduces AWSVPC Networking Mode for Containers to Support Full Networking Capabilities

Tasks running on Amazon EC2 Container Service (Amazon ECS) can now take advantage of AWSVPC mode for container networking. This new mode allocates an elastic networking interface to each running task, providing a dynamic private IP address and internal DNS name. This simplifies container networking operations, allowing tasks to run with full networking features on AWS, just like EC2 instances. 

from What's New http://ift.tt/2yC5Ptv