# ip ddns ipv6

## Syntax

```
[no] ip ddns ipv6 off|on
```

## Syntax Description

<table><thead><tr><th width="203">Keyword</th><th>Description</th></tr></thead><tbody><tr><td><code>no</code></td><td>(Optional) Reset the command to its default value.</td></tr><tr><td><code>off</code></td><td>An AAAA record will not be created in DDNS.</td></tr><tr><td><code>on</code></td><td>An AAAA record will be created in DDNS.</td></tr></tbody></table>

## Defaults

An AAAA record is created in DDNS by default.

## Usage Guidelines

The Island DDNS service creates both A (IPv4) and AAAA (IPv6) DNS records by default. This can cause delayed or broken connectivity when using a port-forward to direct incoming traffic to a device that does not support IPv6.

This command can be used to disable the generation of AAAA DNS records so that clients will attempt to connect using IPv4 only.

This command has no effect unless a DDNS name is defined in the app or using the [ip ddns name](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ip-global-context/ip-ddns-name) command.

## Examples

```
ip ddns ipv6 off
```

## Related Commands

{% content-ref url="ip-ddns-name" %}
[ip-ddns-name](https://docs.islandrouter.com/island-router-cli-2.3.2/commands/ip-global-context/ip-ddns-name)
{% endcontent-ref %}