---
title: Set Ipv6
url: https://docs.vultr.com/reference/vultr-cli/instance/reverse-dns/set-ipv6
description: Configure reverse DNS (PTR) records for IPv6 addresses on Vultr instances
publish_date: 2025-09-14T03:06:44.695975Z
last_updated: 2025-11-07T17:47:38.007263Z
---

The `vultr-cli instance reverse-dns set-ipv6` command configures reverse DNS (PTR record) for an IPv6 address associated with a Vultr instance, enabling proper reverse IP lookups.

## Usage

```console
$ vultr-cli instance reverse-dns set-ipv6 <Instance ID> <IPv6 Address> [flags]
```

## Flags
| Shorthand | Long Version | Description |
|-----------|--------------|-------------|
| -e | --entry | reverse dns entry |