![docker network address unavailab;e docker network address unavailab;e](https://raw.githubusercontent.com/collabnix/dockerlabs/master/docker/img/docker-interview-14.png)
![docker network address unavailab;e docker network address unavailab;e](https://i.stack.imgur.com/M6hQg.png)
With the -fixed-cidr-v6 parameter set Docker will add a new route to the routing table.
#Docker network address unavailab;e mac#
This way an IPv6 address can end with the container’s MAC address and you prevent NDP neighbor cache invalidation issues in the Docker layer. The subnet for Docker containers should at least have a size of /80. Setting the IPv6 subnet via the -fixed-cidr-v6 parameter when starting Docker daemon will help us achieve globally routable IPv6 address.
![docker network address unavailab;e docker network address unavailab;e](https://hicu.be/wp-content/uploads/2016/05/docker-macvlan-bridge-mode.png)
To assign globally routable IPv6 addresses to your containers you have to specify an IPv6 subnet to pick the addresses from. Why did we add “fixed-cidr-v6”: “2001:db8:1::/64” entry?īy default, containers that are created will only get a link-local IPv6 address. Docker will set up the bridge docker0 with the IPv6 link-local address fe80::1. This is very similar to old way of running the Docker daemon with the -ipv6 flag. You can enable IPv4/IPv6 dualstack support by adding the below entry under daemon.json file as shown below: Support for IPv6 address has been there since Docker Engine 1.5 release.As of Docker 17.06 version (which is the latest stable release as of August 2017) by default, the Docker server configures the container network for IPv4 only. and just thought to share few of the findings around IPv6 effort ongoing in Docker upcoming releases. I have been reading numerous queries, GITHUB issues around breaking IPv6 configuration while upgrading Docker version, issues related to IPv6 changes with host configuration etc. Does Docker support IPv6 protocol too? If yes, how complicated is to get it enabled? Can I use docker-compose to build micro services which uses IPv6 addresses? What if I work for a company where our services run natively under IPv6 only environment? How shall I build Multi-Node Cluster setup using IPv6? Does Docker 17.06 Swarm Mode support IPv6? By default, Docker assigns IPv4 addresses to containers.