CFP: Modify a config parameter in Helm chart values.yaml to enable multicast

[wsiewyin]

Cilium Feature Proposal

Thanks for taking time to make a feature proposal for Cilium! If you have usage questions, please try the slack channel and see the FAQ first.

Is your proposed feature related to a problem?

If so, please describe the problem

Describe the feature you'd like

To use multicast, we have to

• cilium config set multicast-enabled true
• cilium-dbg bpf multicast group add
• cilium-dbg bpf multicast subscriber add

It will be easier to modify a config parameter in Helm chart values.yaml to enable multicast.
Antrea CNI has such a feature.

Include any specific requirements you need

(Optional) Describe your proposed solution

Please complete this section if you have ideas / suggestions on how to implement the feature. We strongly recommend discussing your approach with Cilium committers before spending lots of time implementing a change.

For longer proposals, you are welcome to link to an external doc (e.g. a Google doc). We have a Cilium Feature Proposal template to help you structure your proposal - if you would like to use it, please make a copy and ensure it's publicly visible, and then add the link here.

Once the CFP is close to being finalized, please add it as a PR to the design-cfps repo for final approval.