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This isn't based on external IP. This is using JavaScript to make requests inside your LAN.



Yeah I feel like samy.pl demonstrated this years ago, freaked me out and I have been running noscript ever since :D


Weirdly it's wrong for me, there's LAN IPs on the list that don't exist, and it's missing ones that do. Firefox on Ubuntu, with uBlock Origin, over WiFi.




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