On FW 2.06.1 the web ui is missing some options from the custom ddns page.
Its missing username, password, domain
The UI is also complaining if I have connected the wan port to a local network when saving the public ipcheck url, this is how I test the config before sending a router out. It would be nice if all checks where disabled when using custom.
The workaround is to use the CLI and write the config file manually and then everything works. (UI still works on the RUT240)