// At least one of ipv4 and ipv6 must be specified.
  // This field is immutable.
  // +optional
  optional string ipv6 = 4;
}

// IPAddress represents a single IP of a single IP Family. The object is designed to be used by APIs
// that operate on IP addresses. The object is used by the Service core API for allocation of IP addresses.

  // manually, the requested family is available in the cluster,
  // and ipFamilyPolicy allows it, it will be used; otherwise creation of
  // the service will fail. This field is conditionally mutable: it allows
  // for adding or removing a secondary IP family, but it does not allow
  // changing the primary IP family of the Service. Valid values are "IPv4"

}

type realDeps struct{}

func (m *realDeps) ipsetIPHashCreate(name string, v6 bool) error {
	var family uint8

	if v6 {
		family = unix.AF_INET6
	} else {
		family = unix.AF_INET
	}
	err := netlink.IpsetCreate(name, "hash:ip", netlink.IpsetCreateOptions{Comments: true, Replace: true, Family: family})
	if ipsetErr, ok := err.(nl.IPSetError); ok && ipsetErr == nl.IPSET_ERR_EXIST {
		return nil
	}

	return err

    # Kubernetes 1.15+
    CONFIG=${DEFAULT_CLUSTER_YAML}
  fi

  # Configure the cluster IP Family if explicitly set
  if [ "${IP_FAMILY}" != "ipv4" ]; then
    grep "ipFamily: ${IP_FAMILY}" "${CONFIG}" || \
    cat <<EOF >> "${CONFIG}"
networking:
  ipFamily: ${IP_FAMILY}
EOF
  fi

  KIND_WAIT_FLAG="--wait=180s"
  KIND_DISABLE_CNI="false"
  if [[ -n "${KUBERNETES_CNI:-}" ]]; then

		//
		// TODO largely identical/copied from tools/istio-iptables/pkg/capture/run_linux.go
		inpodMarkRule := netlink.NewRule()
		inpodMarkRule.Family = family
		inpodMarkRule.Table = RouteTableInbound
		inpodMarkRule.Mark = InpodTProxyMark
		inpodMarkRule.Mask = InpodTProxyMask
		inpodMarkRule.Priority = 32764
		rules = append(rules, inpodMarkRule)
	}

	for _, rule := range rules {
		log.Debugf("Iterating netlink rule : %+v", rule)

		return 0, fmt.Errorf("find link for %v: %v", ip, err)
	}
	return link.Attrs().NetNsID, nil
}

func getLinkWithDestinationOf(ip string) (netlink.Link, error) {
	routes, err := netlink.RouteListFiltered(
		netlink.FAMILY_V4,
		&netlink.Route{Dst: &net.IPNet{IP: net.ParseIP(ip), Mask: net.CIDRMask(32, 32)}},
		netlink.RT_FILTER_DST)
	if err != nil {
		return nil, err
	}

	if len(routes) == 0 {