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Chapter 7. Configuring the Podman CNI to use IPv6

In some cases, you might want to run a local instance of Red Hat Quay to use IPv6. This setup is common for development or testing purposes.

By default, the Podman network for a root user does not use IPv6, and instead defaults to use IPv4. You can configure the Podman Container Network Interface (CNI) to use both IPv4 and IPv6, which allows for a local instance of Red Hat Quay using IPv6.

Additional resources

7.1. Creating a dual-stack container network
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Use the following procedure to create a new container network that is dual-stack.

Procedure

  • Unless there is a requirement that the default container network use both IPv4 and IPv6, it is suggested that a new container network is created that is dual-stack. As a root user, create a new container network that is dual-stack by running the following command: 

    # podman network create ip-dual-stack --ipv6

    With this command, new containers use this network are a natively dual-stack.

7.2. Deploying a local instance of Red Hat Quay in IPv6
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After you have created a new dual-stack container network, you can deploy a local instance of Red Hat Quay.

Prerequisites

  • You have configured Redis, your PostgreSQL database, local image storage, and creating a config.yaml file with the desired settings.

Procedure

  1. In your Red Hat Quay config.yaml file, set the FEATURE_LISTEN_IP_VERSION field to IPv6. For example: 

    # ...
FEATURE_LISTEN_IP_VERSION: dual-stack
# ...

  2. Enter the following command to start the Quay registry container, specifying the appropriate volumes for configuration data and local storage for image data. Note that if you are using dual-stack, you must specify explicit IPv6 port mapping when starting the container. 

    $ sudo podman run -d --rm -p "[::]:80:8080" -p "[::]:443:8443"  \
   --name=quay \
   -v $QUAY/config:/conf/stack:Z \
   -v $QUAY/storage:/datastorage:Z \
   registry.redhat.io/quay/quay-rhel9:v3.15.3
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