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Add calico/node prerequisites for WG #3983

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Nov 6, 2020
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Add calico/node prerequisites for WG #3983

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Add calico/node prerequisites for WG
Sep 8, 2020
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Sep 8, 2020
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3 changes: 3 additions & 0 deletions security/encrypt-cluster-pod-traffic.md
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Expand Up @@ -21,6 +21,9 @@ This how-to guide uses the following {{site.prodname}} features:

- [Install and configure calicoctl]({{site.baseurl}}/getting-started/clis/calicoctl/install)
- Verify the operating system(s) running on the nodes in the cluster {% include open-new-window.html text='support WireGuard' url='https://www.wireguard.com/install/' %}.
- WireGuard in {{site.prodname}} requires node IP addresses to establish secure tunnels between nodes. {{site.prodname}} can automatically detect IP address of a node using [IP Setting]({{site.baseurl}}/reference/node/configuration#ip-setting) and [IP autodetection method]({{site.baseurl}}/reference/node/configuration#ip-autodetection-methods) in [calico/node]({{site.baseurl}}/reference/node/configuration) resource.
- Set `IP` (or `IP6`) environment variable to `autodetect`.
- Set `IP_AUTODETECTION_METHOD` (or `IP6_AUTODETECTION_METHOD`) to an appropriate value. If there are multiple interfaces on a node, set the value to detect the IP address of the primary interface.

> **Note**: WireGuard in {{site.prodname}} does not support IPv6 at this time. Also, encryption using WireGuard is not supported if `CALICO_NETWORKING_BACKEND=none` (e.g. managed Kubernetes platforms EKS, AKS and GKE).
{: .alert .alert-info}
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