server["Server auf http://127.0.0.1:8000/app"]

browser --> proxy
proxy --> server
```

/// tip | "Tipp"

Die IP `0.0.0.0` wird üblicherweise verwendet, um anzudeuten, dass das Programm alle auf diesem Computer/Server verfügbaren IPs abhört.

///

Die Benutzeroberfläche der Dokumentation würde benötigen, dass das OpenAPI-Schema deklariert, dass sich dieser API-`server` unter `/api/v1` (hinter dem Proxy) befindet. Zum Beispiel:

```JSON hl_lines="4-8"

    },
    "prevResult": {
        "cniversion": "%s",
        "interfaces": [
            {
                "name": "%s",
                "sandbox": "%s"
            }
        ],
        "ips": [
            {
                "version": "4",
                "address": "10.0.0.2/24",
                "gateway": "10.0.0.1",
                "interface": 0
            }
        ],
        "routes": []

				}
				for _, addr := range addrs {
					domainIPs.Add(addr)
				}
			}
			domainIPs.Add(endpoint)
		}
		updateDomainIPs(domainIPs)
	} else {
		// Add found interfaces IP address to global domain IPS,
		// loopback addresses will be naturally dropped.
		domainIPs := mustGetLocalIP4()
		for _, host := range globalEndpoints.Hostnames() {
			domainIPs.Add(host)
		}
		updateDomainIPs(domainIPs)
	}

// via the nodeIP
// - kubelet (node-local healthchecks, which we do not capture)
// - kube-proxy (fowarded/proxied traffic from LoadBalancer-backed services, potentially with public IPs, which we must capture)
func (cfg *IptablesConfigurator) CreateHostRulesForHealthChecks(hostSNATIP, hostSNATIPV6 *netip.Addr) error {
	// Append our rules here
	builder := cfg.appendHostRules(hostSNATIP, hostSNATIPV6)

message IngressRule {
  // host is the fully qualified domain name of a network host, as defined by RFC 3986.
  // Note the following deviations from the "host" part of the
  // URI as defined in RFC 3986:
  // 1. IPs are not allowed. Currently an IngressRuleValue can only apply to
  //    the IP in the Spec of the parent Ingress.
  // 2. The `:` delimiter is not respected because ports are not allowed.

    - When upgrading from previous releases, issues will arise with public IPs if multiple clusters share the same resource group. To solve these problems, make the following changes to the cluster:
Recreate the relevant LoadBalancer services, or add a new tag 'kubernetes-cluster-name: <cluster-name>' manually for existing public IPs.

- Add --permit-address-sharing flag to `kube-apiserver` to listen with `SO_REUSEADDR`. While allowing to listen on wildcard IPs like 0.0.0.0 and specific IPs in parallel, it avoids waiting for the kernel to release socket in `TIME_WAIT` state, and hence, considerably reducing `kube-apiserver` restart times under certain conditions. ([#93861](https://github.com/kubernetes/kubernetes/pull/93861),...

- The `CloudDualStackNodeIPs` feature is now `beta`, meaning that when using
  an external cloud provider that has been updated to support the feature,
  you can pass comma-separated dual-stack `--node-ips` to `kubelet` and have
  the cloud provider take both IPs into account. ([#120275](https://github.com/kubernetes/kubernetes/pull/120275), [@danwinship](https://github.com/danwinship))

- Fix CEL estimated cost of expressions that perform equality checks of IPs, CIDRs, Quantities, Formats and URLs. ([#126359](https://github.com/kubernetes/kubernetes/pull/126359), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery]

* Added DNS Reverse Record logic for service IPs ([#26226](https://github.com/kubernetes/kubernetes/pull/26226), [@ArtfulCoder](https://github.com/ArtfulCoder))