It’s been a while since I found a settings page that doesn’t do this but normally you’d have the ability to type in the number for each octet and hit the . key to move to the next octet. As if you were just typing in any text box 184.108.40.206 or something and every “dot” acted as a tab. Not sure how difficult that is to implement but it makes the interface seem a lot more functional. I noticed it in the DNS settings but I’d think anywhere there’s an IP to be entered.
They use tab.