We have a screen where we currently edit an IP pool, that is, a list of IP ranges (220.127.116.11-18.104.22.168, 22.214.171.124-126.96.36.1990). It's pretty hard to use because there's a single input and you have to select the one you currently want to edit.
An inline editing grid is being proposed
We're also thinking that an alternative would be to just allow them to enter them into a textarea, where each line is an IP range. This would have the benefit that administrators can create their entire pool on a text field and just paste it here. No add/edit/delete buttons.
One drawback would be that when validating it is that we'd have no way to highlight only the range that may be mis-formatted, it would only be a single error at the bottom.
I would appreciate any feedback and previous experience with similar issues.