IPv6 for Cilium

[codeagencybe]

Hello

I'm currently working on a case where I need cilium_gateway_api_proxy_protocol_enabled = true to handle a check on a custom header for incoming API requests. I have been checking for several days and the only solution forward that keeps coming up is to enable that Cilium feature in kubernetes.tf but it has a comment like FIX: Disable PROXY protocol to avoid IPv6 bug

I was wondering is this still a real bug as of today? Anyone who can tell me if this is still a problem?
I found several issues on the Cilium repo but they mostly seem to stem for 2024 to early 2026, so I'm hesitant of enabling it and causing any production outages.

[lucacastelnuovo]

I had the same issue, by not adding AAAA records pointing to my loadbalancer I could use proxyprotocol. In my limited testing and understanding I came to the conclusion, that I could choose between adding AAAA records or enabling proxy protocol.