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* duckdns: add option to grab IP addresses from URLs

Enables use of external services instead of Duck DNS' automatic
detection, which at time of writing doesn't work with IPv6.

* Update config.json

* Update CHANGELOG.md

* Update README.md

Co-authored-by: Pascal Vizeli <pascal.vizeli@syshack.ch>
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README.md

Home Assistant Add-on: DuckDNS

Automatically update your Duck DNS IP address with integrated HTTPS support via Let's Encrypt.

Supports aarch64 Architecture Supports amd64 Architecture Supports armhf Architecture Supports armv7 Architecture Supports i386 Architecture

About

Duck DNS is a free service that points a DNS (sub-domains of duckdns.org) to an IP of your choice. This add-on includes support for Let’s Encrypt and automatically creates and renews your certificates. You need to sign up for a Duck DNS account before using this add-on.

Installation

Follow these steps to get the add-on installed on your system:

  1. Navigate in your Home Assistant frontend to Supervisor -> Add-on Store.
  2. Find the "DuckDNS" add-on and click it.
  3. Click on the "INSTALL" button.

How to use

  1. Visit DuckDNS.org and create an account by logging in through any of the available account services (Google, Github, Twitter, Persona, Reddit).
  2. In the Domains section, type the name of the subdomain you wish to register and click add domain.
  3. If registration was a success, the subdomain is listed in the Domains section along with current ip being the public IP address of the device you are currently using to access duckdns.org. The IP address will be updated by the DuckDNS add-on.
  4. In the DuckDNS add-on configuration, perform the following:
    • Copy the DuckDNS token (listed at the top of the page where account details are displayed) from duckdns.org and paste into the token option.
    • Update the domains option with the full domain name you registered. E.g., my-domain.duckdns.org.

Configuration

Add-on configuration:

lets_encrypt:
  accept_terms: true
  certfile: fullchain.pem
  keyfile: privkey.pem
token: sdfj-2131023-dslfjsd-12321
domains:
  - my-domain.duckdns.org
seconds: 300

Option group lets_encrypt

The following options are for the option group: lets_encrypt. These settings only apply to Let's Encrypt SSL certificates.

Option lets_encrypt.accept_terms

Once you have read and accepted the Let's EncryptSubscriber Agreement, change value to true in order to use Let's Encrypt services.

Option lets_encrypt.certfile

The name of the certificate file generated by Let's Encrypt. The file is used for SSL by Home Assistant add-ons and is recommended to keep the filename as-is (fullchain.pem) for compatibility.

Note: The file is stored in /ssl/, which is the default for Home Assistant

Option lets_encrypt.keyfile

The name of the private key file generated by Let's Encrypt. The private key file is used for SSL by Home Assistant add-ons and is recommended to keep the filename as-is (privkey.pem) for compatibility.

Note: The file is stored in /ssl/, which is the default for Home Assistant

Option: ipv4 (optional)

By default, Duck DNS will auto detect your IPv4 address and use that. This option allows you to override the auto-detection and specify an IPv4 address manually.

If you specify a URL here, contents of the resource it points to will be fetched and used as the address. This enables getting the address using a service like https://api4.ipify.org/ or https://ipv4.wtfismyip.com/text

Option: ipv6 (optional)

By default, Duck DNS will auto detect your IPv6 address and use that. This option allows you to override the auto-detection and specify an IPv6 address manually.

If you specify a URL here, contents of the resource it points to will be fetched and used as the address. This enables getting the address using a service like https://api6.ipify.org/ or https://ipv6.wtfismyip.com/text

Option: token

The DuckDNS authentication token found at the top of the DuckDNS account landing page. The token is required to make any changes to the subdomains registered to your account.

Option: domains

A list of DuckDNS subdomains registered under your account. An acceptable naming convention is my-domain.duckdns.org.

Option: seconds

The number of seconds to wait before updating DuckDNS subdomains and renewing Let's Encrypt certificates.

Known issues and limitations

  • To log in, DuckDNS requires a free account from any of the following services: Google, Github, Twitter, Persona or Reddit.
  • A free DuckDNS account is limited to five subdomains.
  • At time of writing, Duck DNS' own IPv6 autodetection does not actually work, but you can use the URL option for ipv6 to get around this, read on.

Support

Got questions?

You have several options to get them answered:

In case you've found a bug, please open an issue on our GitHub.

You can’t perform that action at this time.