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Merge pull request #3926 from mwdomino/docker-network-doc-note

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docs: add note about vpn cidr clashes
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Kubernetes Prow Robot
2025-05-05 14:30:50 -07:00
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@@ -41,6 +41,7 @@ description: |-
* [Docker Desktop for macOS and Windows](#docker-desktop-for-macos-and-windows)
* [Older Linux Distributions](#older-linux-distributions)
* [Failure to Create Cluster on WSL2](#failure-to-create-cluster-on-wsl2)
* [Local Subnet Clashes](#local-subnet-clashes)
## Troubleshooting Kind
@@ -416,6 +417,26 @@ the project relies on community support and feedback. It has been noted that the
steps detailed in [https://github.com/spurin/wsl-cgroupsv2](https://github.com/spurin/wsl-cgroupsv2)
have been necessary to resolve this issue.
## Local Subnet Clashes
KIND creates a separate docker network named `kind` that will be configured with default IPAM settings. If you are using the default IPAM configuration in your `daemon.json` you
may have conflicts with existing networks (like VPNs, labs, etc) that route the 172.17.x.x networks. To resolve this you can reconfigure the daemon-wide IPAM so that all
networks will be created in subnets that do not have these conflicts.
An example configuration that you can add to your `daemon.json` is below. This would configure `10.253.0.0/16` as the defauld CIDR with each individual network receiving a /24
subnet to use for allocation.
```json
"default-address-pools": [
{
"base": "10.253.0.0/16",
"size": 24
}
]
```
For more information on the Docker Engine config file check out [these docs](https://docs.docker.com/engine/daemon/).
[kind#156]: https://github.com/kubernetes-sigs/kind/issues/156
[kind#229]: https://github.com/kubernetes-sigs/kind/issues/229
[kind#1179]: https://github.com/kubernetes-sigs/kind/issues/1179