How to Configure DDNS on OpenWrt

Many services provide DDNS, and each service has its own configuration and usage policy. This guide uses Cloudflare for a domain you already own and manage through Cloudflare. Other DDNS services follow a similar process.

I. Preparation

I.1 Install the required packages

1. Log in to the router and open System > Software.
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2. Click Update Lists to refresh the package list.
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3. Find and install ddns-scripts and luci-app-ddns.
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   For Cloudflare DDNS, also install ddns-scripts-cloudflare.

I.1.1 Configure Cloudflare DDNS

1. Open Services > Dynamic DNS, remove the two default entries, and click Save & Apply.
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2. Click Add new service....
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   2.1. Enter any name and select Cloudflare.com-v4 as the DDNS Service provider.
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   2.2. Click Create service, then Cancel to close the dialog.
3. Click Edit on the new service.
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In Basic Settings, enter:

In Advanced Settings:

Click Save > Save & Apply, then click Reload to update the address.

To view the result, open Edit > Log File Viewer, click Read / Reread log file, and scroll to the bottom. A line such as Forced update successful - IP: '171.225.xxx.xxx' send indicates success.

The service checks and updates the address automatically at regular intervals.

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I.1.2 Configure another DDNS provider

The following example uses DuckDNS.org.

1. Register for a free account at https://duckdns.org .

    Log in to DuckDNS

   

2. Create a domain by entering its name and clicking add domain.

    Create a DuckDNS domain

   

3. Configure it in OpenWrt: 3.1. Open Services > Dynamic DNS, remove the default entries, and click Save & Apply.

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   3.2. Click Add new service....
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   3.3. Select DuckDNS as the provider. 3.4. Click Create service, then Cancel to close the dialog.

4. Click Edit on the new service.

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In Basic Settings:

In Advanced Settings:

5. Click Save > Save & Apply.
6. Click Reload to update the IP.

Good luck!