Kubernetes is quickly becoming the default when it comes to application deployment and management. Even though originally it was geared towards very large clusters it can also be deployed on individual devices, such as a Raspberry Pi. There's a number of Kubernetes distributions that offer all-in-one, single node…
ENIs come with a number of IPv4 and IPv6 interfaces (current numbers are here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#AvailableIpPerENI ), but what happens if for some reason we need more than what a single ENI can support? The answer is to use multiple ENIs attached…
Sometimes there's a need to run iptables inside a Docker container. The most common scenario is probably when the container is attached not to a standard Docker bridge (which provides network connectivity using iptables) but to a network configured using macvlan or ipvlan driver. In that scenario the…
This post shows how to set up various VPC-related resources using CloudFormation to enable IPv6 for them. Components Diagram below shows all the components described in this post. VPC IPv6 requires one additional resource - AWS::EC2::VPCCidrBlock to request an /56 block of addresses from AWS. rVPC: Type: "…
It's been over 20 years since IPv6 was first defined, but many applications and systems (Docker included) shy away from actively using it. Running Docker with IPv6 is not complicated, but requires certain preparations and a slightly deeper understanding of Docker networking. The main difference between running on…