Diameter User Guide Configuring Diameter Diameter DNS Options Editing DNS Options 2.30.2 Editing DNS Options Use this task to edit an existing DNS Options. The fields are described in Diameter DNS Options Elements. Click Diameter, and then Configuration, and then DNS Options. Update the relevant fields. Click Apply or Cancel.If Apply is clicked and any of the following conditions exist, then an error message appears: The selected Traffic Throttle Point Configuration Set no longer exists; it has been deleted by another user. Any field is empty (no value was entered). The value in any field is not valid or is out of range.