Hey Alex,
Thanks for the response. This is the AWS scenario where there's a 1:1 NAT from the public to private IP.
I've got as far as figuring out how to advertise the public IP. But, when I forward the request to another node inside the cluster, I assume I want to double-RR that request so that my internal SIP application sees the private IP of the instance. Similarly, for outbound traffic, I want to double-RR so the remote party sees the public IP of the host.
That's the part I'm struggling with.
Best,
Colin