From 04fd831f00fe79eba1a0feabf09add8583ab50d2 Mon Sep 17 00:00:00 2001 From: Manuel Buil Date: Thu, 4 Nov 2021 21:59:12 +0100 Subject: [PATCH] Add dual-stack warning Signed-off-by: Manuel Buil --- content/k3s/latest/en/installation/network-options/_index.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/content/k3s/latest/en/installation/network-options/_index.md b/content/k3s/latest/en/installation/network-options/_index.md index 4b66327f51a..dcc65a03aea 100644 --- a/content/k3s/latest/en/installation/network-options/_index.md +++ b/content/k3s/latest/en/installation/network-options/_index.md @@ -72,6 +72,8 @@ You should see that IP forwarding is set to true. ### Dual-stack installation +Dual-stack networking must be configured when the cluster is first created. It cannot be enabled on an existing single-stack cluster. + To enable dual-stack in k3s, you must provide valid dual-stack `cluster-cidr` and `service-cidr`, and set `disable-network-policy` on all server nodes. Both servers and agents must provide valid dual-stack `node-ip` settings. Node address auto-detection and network policy enforcement are not supported on dual-stack clusters when using the default flannel CNI. Besides, only vxlan backend is supported at the moment. This is an example of a valid configuration: ```