Avoid sites fetching your internal IP by disabling WebRTC…
The native way:
– Go to about:config and set “media.peerconnection.ice.default_address_only” to true
And the old way:
– Use a plugin like “Disable WebRTC”
https://addons.mozilla.org/en-us/firefox/addon/happy-bonobo-disable-webrtc/
What is WebRTC and what does it work for?
https://en.wikipedia.org/wiki/WebRTC
Sources:
https://wiki.mozilla.org/Media/WebRTC/Privacy
https://addons.mozilla.org/en-us/firefox/addon/happy-bonobo-disable-webrtc/
AC.