[mmcallister]

a minor point but you can't _encrypt_ source IPs, you can only obfuscate or more accurately, proxy.

[kube-system]

I was being sarcastic. The suggestion above that the privacy of an IP address could be "guaranteed by cryptography" is silly. Cryptography is not a hammer that can be used for all problems. At some point you have to transmit your IP over the internet if you want a reply.