clusterIPsCheckChain = "cluster-ips-check"

	// LoadBalancerSourceRanges handling
	firewallIPsMap     = "firewall-ips"
	firewallCheckChain = "firewall-check"

	// masquerading
	markMasqChain     = "mark-for-masquerade"
	masqueradingChain = "masquerading"
)

// NewDualStackProxier creates a MetaProxier instance, with IPv4 and IPv6 proxies.
func NewDualStackProxier(
	ctx context.Context,
	syncPeriod time.Duration,

			// results in the service VIP being picked as the source IP to reach
			// a VIP. This leads to a connection from VIP:<random port> to
			// VIP:<service port>.
			// Always masquerading OUTPUT (node-originating) traffic with a VIP
			// source ip and service port destination fixes the outgoing connections.
			proxier.natRules.Write(
				args, "src,dst",
				"-j", string(kubeMarkMasqChain))
		}

	proxier.natRules.Write(
		"-A", string(kubePostroutingChain),
		"-m", "mark", "!", "--mark", fmt.Sprintf("%s/%s", proxier.masqueradeMark, proxier.masqueradeMark),
		"-j", "RETURN",
	)
	// Clear the mark to avoid re-masquerading if the packet re-traverses the network stack.
	proxier.natRules.Write(
		"-A", string(kubePostroutingChain),
		"-j", "MARK", "--xor-mark", proxier.masqueradeMark,
	)
	masqRule := []string{

* Incremental improvements to kubelet e2e tests ([#24426](https://github.com/kubernetes/kubernetes/pull/24426), [@pwittrock](https://github.com/pwittrock))
* Bridge off-cluster traffic into services by masquerading. ([#24429](https://github.com/kubernetes/kubernetes/pull/24429), [@cjcullen](https://github.com/cjcullen))