====== Dynamic DNS ======

DD-WRT NXT has presets for several Dynamic DNS providers:
  * dyndns.org
  * changeip.com
  * he.net
  * no-ip.com

If your provider is not listed,
you can also use "Custom Configuration" and a custom update URL(most providers will provide those to users).

For the Custom Update URL, you can inject the needed informations from the input fields as following:

Example (pure fictional example URL):

''http://[USERNAME]:[PASSWORD]@testuser123.org/update.cgi?hostname=[DOMAIN]&myip=[IP]''


Where the following parts of the URL will be replaced during the request with the according fields:
  * [USERNAME] will be replaced with the value of the "Username" field
  * [PASSWORD] will be replaced with the value of the "Password" field
  * [DOMAIN] will be replaced with the value of the "Domain" field
  * [IP] will be replaced with Value, according to the "Check IP at" settings (described below)

==== Check IP at ====
The setting of this field will change which IP will be passed to your Dynamic DNS provider for Custom or other providers.
  * WAN - The WAN IP-Address of the router will be passed to the DNS Provider as your outbound IP (this may only be the case for DSL Modems)
  * Internet - The outbound IP-Address as for the checkip.dyndns.com API (works for Modems as well as Routers)



==== Timeout Configuration ====

  * Verify - The configured Domain will be verified to match the IP from "Check IP at" every **N** minutes
  * Refresh - The Update will be performed every **N** hours defined here



==== Example Configuration View ====

{{ :howto:use_cases:routing:dyndns.png?direct&600 |}}