So @Mitch, why does "Hostname" (containing the IP address) have an editable field, if it shouldn't ever be changed? That was a pretty dumb move by whoever designed the form. If you want to display the IP address but not allow the user to change it, just output it as text. Are there any circumstances where the user should be able to change this field? If not, don't make it changeable! If there are very rare instances, it should be a "readonly" entry field, with a button or switch somewhere else on the page to remove/replace the "readonly" attribute. That will discourage most users from casually changing the IP address.