It wouldn't be a separate button, it would just popup with a tooltip on hover. So you move your mouse over the IP and it would say "Click to copy to clipboard". Clicking it would add it to your clipboard.
@mcmanuss8 Yes, if you select text, then it's automatically stored in the PRIMARY buffer, and it can then be pasted in another window by middle-click, highly useful for terminals. The CLIPBOARD buffer is a separate buffer. Hover boxes and changing the HTML below the mouse is, imho annoying and makes it harder to select the text. When I occasionally uses a someones Windows/Mac machine, I forget that this doesn't work on those platforms.