21 lines
613 B
Markdown
21 lines
613 B
Markdown
# IPv4 and IPv6 Dual-stack config
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If you need to run your K3S cluster with both IPv4 and IPv6 address ranges
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you will need to configure the `k3s_server.cluster-cidr` and
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`k3s_server.service-cidr` values specifying both ranges.
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:hand: if you are using `k3s<1.23` you will need to use a different CNI as
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dual-stack support is not available in Flannel.
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Below is a noddy example:
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```yaml
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---
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k3s_server:
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# Using Calico on k3s<1.23 so Flannel needs to be disabled.
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flannel-backend: 'none'
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# Format: ipv4/cidr,ipv6/cidr
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cluster-cidr: 10.42.0.0/16,fc00:a0::/64
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service-cidr: 10.43.0.0/16,fc00:a1::/64
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```
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