} else {
			log.Errorf("Validation failed: %v", err)
		}
		return err
	}
}

// TODO(lambdai): remove this if iptables only need to redirect to outbound proxy port on A call A
func genListenerAddress(ip netip.Addr, ports []string) []string {
	addresses := make([]string, 0, len(ports))
	for _, port := range ports {
		addresses = append(addresses, net.JoinHostPort(ip.String(), port))
	}
	return addresses
}