#### kube-controller-manager:
- Azure service annotation service.beta.kubernetes.io/azure-load-balancer-disable-tcp-reset has been deprecated. Its support would be removed in a future release. ([#88462](https://github.com/kubernetes/kubernetes/pull/88462), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

#### kubelet:

	var d net.Dialer
	var retry int
	for retry < len(hosts) {
		ctx, cancel := context.WithTimeout(GlobalContext, 300*time.Millisecond)

		host = hosts[rng.Intn(len(hosts))]
		conn, err := d.DialContext(ctx, "tcp", host)
		cancel()
		if err != nil {
			retry++
			continue
		}
		conn.Close()
		break
	}

	return host
}

// IsCompressed returns true if the object is marked as compressed.

		Name:      "dial_errors",
		Help:      "Total number of internode TCP dial timeouts and errors",
		Type:      counterMetric,
	}
}

func getInternodeTCPAvgDuration() MetricDescription {
	return MetricDescription{
		Namespace: interNodeMetricNamespace,
		Subsystem: trafficSubsystem,
		Name:      "dial_avg_time",
		Help:      "Average time of internodes TCP dial calls",
		Type:      gaugeMetric,
	}
}

- GCE does not support LoadBalancer Services with ports with different protocols (TCP and UDP) ([#115966](https://github.com/kubernetes/kubernetes/pull/115966), [@aojea](https://github.com/aojea)) [SIG Apps and Cloud Provider]

## Changelog since v1.23.16

## Changes by Kind

### Feature

- Kubelet TCP and HTTP probes are more effective using networking resources: conntrack entries, sockets, ... 

	if err != nil {
		limitLines = 10
	}

	logKind := madmin.LogKind(strings.ToUpper(r.Form.Get("logType"))).LogMask()
	if logKind == 0 {
		logKind = madmin.LogMaskAll
	}

	// Avoid reusing tcp connection if read timeout is hit
	// This is needed to make r.Context().Done() work as
	// expected in case of read timeout
	w.Header().Set("Connection", "close")

	setEventStreamHeaders(w)

- Service.beta.kubernetes.io/azure-load-balancer-disable-tcp-reset is removed.  All Standard load balancers will always enable tcp resets. ([#94297](https://github.com/kubernetes/kubernetes/pull/94297), [@MarcPow](https://github.com/MarcPow)) [SIG Cloud Provider]

*   You can once again use 0 values for conntrack min, max, max per core, tcp close wait timeout, and tcp established timeout; this functionality was broken in 1.8. ([#55261](https://github.com/kubernetes/kubernetes/pull/55261),[ @ncdc](https://github.com/ncdc))

#### **CoreDNS**

Node-local DNS cache feature is available in Alpha. This feature deploys a lightweight DNS caching Daemonset that avoids the conntrack and converts queries from UDP to more reliable TCP.
PodReady++ feature now has `kubectl` CLI support.

Progress was made towards finalizing the IPv6 dual stack support KEP and support for topological routing of services.

### SIG Node

- SCTP is now supported as an additional protocol (alpha) alongside TCP and UDP in Pod, Service, Endpoint, and NetworkPolicy.  ([#64973](https://github.com/kubernetes/kubernetes/pull/64973), [@janosi](https://github.com/janosi)) Courtesy of SIG API Machinery, SIG Apps, SIG Architecture, SIG CLI, SIG Cloud Provider, SIG...