ValidationErrorCode     = 126
)

// DNS ports
const (
	IstioAgentDNSListenerPort = "15053"
)

// type of iptables operation/command to run, as an enum
// the implementation will choose the correct underlying binary,
// so callers should just use these enums to indicate what they want to do.
type IptablesCmd int

const (
	IPTables        IptablesCmd = iota

type Rule struct {
	chain  string
	table  string
	params []string
}

// Rules represents iptables for V4 and V6
type Rules struct {
	rulesv4 []*Rule
	rulesv6 []*Rule
}

// IptablesRuleBuilder is an implementation for IptablesRuleBuilder interface
type IptablesRuleBuilder struct {
	rules Rules
	cfg   *config.Config
}

// NewIptablesBuilders creates a new IptablesRuleBuilder

package cluster

import (
	"bytes"
	"fmt"

	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/test/framework/config"
)

// Map can be given as a shared reference to multiple Topology/Cluster implementations.
// allowing clusters to find each other for lookups of Primary, ConfigCluster, etc.
type Map = map[string]Cluster

func NewTopology(config Config, allClusters Map) Topology {
	return Topology{