Display the current page's IP version and address in Chrome
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pmarks-net Don't enable/disable the context menu.
On Chrome 70 (possibly earlier), the menu stopped responding to racing
changes, so let's just leave the bgp.he.net option enabled, and decide
what to do based on the selected text.

Use bgp.he.net/dns for hostnames,
per #41
Latest commit f91c7da Sep 6, 2018

README.md

IPvFoo is a Chrome extension that adds an icon to your location bar, indicating whether the current page was fetched using IPv4 or IPv6. When you click the icon, a pop-up appears, listing the IP address for each domain that served the page elements.

Everything is captured privately using the webRequest API (new in Chrome 17), without creating any additional network traffic.

Install it from the Chrome Web Store:

https://chrome.google.com/webstore/detail/ecanpcehffngcegjmadlcijfolapggal

Screenshot:

Screenshot

Firefox Support:

IPvFoo now runs on Firefox, but there are a few bugs to work out.