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In many cases, it is helpful for applications to know the source IP of a request. With this information, your application can do many useful things, e.g. use GeoIP data to display the appropriate language for the visitor on a website.Unfortunately, in the cloud and especially in Kubernetes, a user's request rarely arrives at your application without detours: Load balancers, ingress controllers, or gateways often forward the request several times before the actual target receives it. In order...