// used while communicating with the cloud backends.
func NewHTTPTransport() *http.Transport {
	return NewHTTPTransportWithTimeout(1 * time.Minute)
}

// Default values for dial timeout
const defaultDialTimeout = 5 * time.Second

// NewHTTPTransportWithTimeout allows setting a timeout.
func NewHTTPTransportWithTimeout(timeout time.Duration) *http.Transport {
	return xhttp.ConnSettings{

		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,
	}
}

- Kube-proxy: Added dual-stack IPv4/IPv6 support to the iptables proxier. ([#82462](https://github.com/kubernetes/kubernetes/pull/82462), [@vllry](https://github.com/vllry)) [SIG Network]

import org.codehaus.plexus.components.secdispatcher.SecDispatcher;

import static org.apache.maven.cling.invoker.mvnenc.DefaultEncryptInvoker.OK;

/**
 * The "diag" goal.
 */
@Singleton
@Named("diag")
public class Diag extends ConfiguredGoalSupport {
    @Inject
    public Diag(MessageBuilderFactory messageBuilderFactory, SecDispatcher secDispatcher) {
        super(messageBuilderFactory, secDispatcher);
    }

    @Override

- `-- kube-controller-manager`
  `--node-cidr-mask-size-ipv4 int32`     Default: 24. Mask size for IPv4 node-cidr in dual-stack cluster.
`--node-cidr-mask-size-ipv6 int32`     Default: 64. Mask size for IPv6 node-cidr in dual-stack cluster.

    These 2 flags can be used only for dual-stack clusters. For non dual-stack clusters, continue to use  `--node-cidr-mask-size` flag to configure the mask size.

pkg log/syslog (freebsd-386-cgo), const LOG_USER Priority
pkg log/syslog (freebsd-386-cgo), const LOG_UUCP Priority
pkg log/syslog (freebsd-386-cgo), const LOG_WARNING Priority
pkg log/syslog (freebsd-386-cgo), func Dial(string, string, Priority, string) (*Writer, error)
pkg log/syslog (freebsd-386-cgo), func New(Priority, string) (*Writer, error)
pkg log/syslog (freebsd-386-cgo), func NewLogger(Priority, int) (*log.Logger, error)

pkg crypto/tls, const TLS_RSA_WITH_RC4_128_SHA uint16
pkg crypto/tls, const VerifyClientCertIfGiven ClientAuthType
pkg crypto/tls, func Client(net.Conn, *Config) *Conn
pkg crypto/tls, func Dial(string, string, *Config) (*Conn, error)
pkg crypto/tls, func Listen(string, string, *Config) (net.Listener, error)
pkg crypto/tls, func LoadX509KeyPair(string, string) (Certificate, error)

### IPv4/IPv6 run

IPv4/IPv6 dual-stack has been reimplemented for 1.20 to support dual-stack Services, based on user and community feedback. If your cluster has dual-stack enabled, you can create Services which can use IPv4, IPv6, or both, and you can change this setting for existing Services. Details are available in updated [IPv4/IPv6 dual-stack docs](https://docs.k8s.io/concepts/services-networking/dual-stack/), which cover the nuanced array of options.

- The  performance of Pod affinity/anti-affinity in the scheduler has been improved. ([#67788](https://github.com/kubernetes/kubernetes/pull/67788), [@ahmad-diaa](https://github.com/ahmad-diaa)) Courtesy of SIG Scalability, and SIG Scheduling

([#62695](https://github.com/kubernetes/kubernetes/pull/62695), [@CaoShuFeng](https://github.com/CaoShuFeng))