add IPv6 cidr to CiliumLoadBalancerIPPool resource

[haraldkoch]

If the config variable bootstrap_ipv6_enabled is set, the CiliumLoadBalancerIPPool is not added to the cluster.

This update changes the bootstrap logic to include a NODE_CIDR_V6 value in the CiliumLoadBalancerIPPool, derived from the key bootstrap_node_cidr in the initial bootstrap/vars/config.yaml file.

It's a barebones change - there is no error checking or the like.

[onedr0p]

This logic will also need to be added to the k3s cilium config, or maybe I should just remove this file and have Flux apply it? There might not be any reason to have the L2 config applied at cluster bootstrap.

The Cilium L2 config is now only being applied by Flux

[onedr0p]

It does look like the tests are failing or need to be updated for ipv4,ipv6 instead of ipv4 in bootstrap_node_cidr

https://github.com/onedr0p/flux-cluster-template/blob/main/.github/tests/config-ipv6.yaml

[onedr0p]

@haraldkoch I think it might be good to circle back on this when the upstream blockers in #1148 are implemented by Cilium or it might give people the wrong impression that this is supported.

[haraldkoch]

Ooof. you're correct - if ND doesn't work, there's no point.

The part that fails to add the IPv4 CiliumLoadBalancerIPPool if IPv6 is enabled still needs fixing, though. All my services were until I fixed that part! I can create a different / separate PR.

[onedr0p]

Feel free to open a new one or reopen this :)