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doc: don't set calico_vxlan_mode_ipv6=vxlanAlways when kernel < 3.12 (#9645) 

Signed-off-by: cyclinder qifeng.guo@daocloud.io

Signed-off-by: cyclinder qifeng.guo@daocloud.io
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Cyclinder 2023-01-17 04:32:09 +08:00 committed by GitHub
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@ -235,6 +235,8 @@ If you are running your cluster with the default calico settings and are upgradi
* perform a manual migration to vxlan before upgrading kubespray (see migrating from IP in IP to VXLAN below)
* pin the pre-2.19 settings in your ansible inventory (see IP in IP mode settings below)
**Note:**: Vxlan in ipv6 only supported when kernel >= 3.12. So if your kernel version < 3.12, Please don't set `calico_vxlan_mode_ipv6: vxlanAlways`. More details see [#Issue 6877](https://github.com/projectcalico/calico/issues/6877).
### IP in IP mode
To configure Ip in Ip mode you need to use the bird network backend.