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Firefox not using IPv6 by default (discuss.tchncs.de)

submitted 10 months ago* (last edited 10 months ago) by nutbutter@discuss.tchncs.de to c/firefox@lemmy.ml

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Websites like ipv6-test.com and test-ipv6.com say that my browser is using IPv4 by default.

This happens on Firefox and LibreWolf. I have tried creating a new profile without add-ons as well. Ungoogled Chromium uses IPv6 by default. If I go to ifconfig.io using Firefox, IPv4 is displayed. But if I use Ungoogled Chromium, IPv6 is displayed.

Is there a way to force IPv6?

I am not bothered by this, but using tools like ping6 and traceroute6 assures me that IPv6 routing is faster for, at least, one of my ISPs.

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[–] nutbutter@discuss.tchncs.de 5 points 10 months ago

Pinging my server in Frankfurt, DE, from my home in India, the ping speed using IPv4 is ~300ms, and using IPv6 is ~270ms.