---
title: DupExpression type | Wartiva GraphQL API
description: Duplicate a packet to another address or device for mirroring or traffic analysis. Wartiva GraphQL API reference with arguments, fields, and examples.
url: https://wartiva.com/api-docs/types/dup-expression.html
updated: 2026-10-07
---

Endpoint configuration · GraphQL type

# `DupExpression` type

Duplicate a packet to another address or device for mirroring or traffic analysis.

## Fields

| Field Name | Description |
|---|---|
| `regAddr` - [`NftRegister!`](https://wartiva.com/api-docs/types/nft-register.html) | Register holding the destination address for the duplicate packet. |
| `regDev` - [`NftRegister!`](https://wartiva.com/api-docs/types/nft-register.html) | Register holding the output device/interface for the duplicate packet. |
| `isRegDevSet` - [`Boolean!`](https://wartiva.com/api-docs/types/boolean.html) | Whether the RegDev field is set (true) or unused (false). |

## Used by

- [`ChainExpression`](https://wartiva.com/api-docs/types/chain-expression.html) union: A union of all possible nftables chain expression types.

## Example

### Example

```json
{"regAddr": "VERDICT", "regDev": "VERDICT", "isRegDevSet": true}

```

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