Communication with k8s/loadbalancer and a droplet in same DC - billed?

Hello, I have a scenario like this:

It seems the only way to address the cluster is via the load balanced (and therefore public) IP.

I can do this from a droplet in the same DC (at <1ms latency), so it works, and I can use a firewall to limit access.

My question is, will I be billed for this communication, since it technically uses the public IP address, even though the machines are in the same DC?



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Yes, that would count against your bandwidth allowance. Any traffic that goes over the public interface is billed, regardless of the destination.

The documentation on bandwidth billing was recently updated to clarify that:

Any data transfer sent by a Droplet using a public network interface will count against the transfer pool for that Droplet’s account. All IPv6 traffic uses the public interface. Data transfer between Droplets over the private network uses a private network interface.