Pre-populate hidden field on E10 form with IP address

I have looked through the forums and cannot find an easy answer for this. I would like to be able to have a form with a hidden field, and the hidden field should be prepopulated with the submitter's ip address.

I know the ip address should be in the customer profile somewhere but I can't access it.

Can this be done?

Alternatively, is there a way to retroactively add IP address on a form submission data report based on email address when you pull an insight report?

Thanks.