this post was submitted on 28 Dec 2023
33 points (90.2% liked)

Firefox

20428 readers
10 users here now

/c/firefox

A place to discuss the news and latest developments on the open-source browser Firefox.

Rules

1. Adhere to the instance rules

2. Be kind to one another

3. Communicate in a civil manner

Reporting

If you would like to bring an issue to the moderators attention, please use the "Create Report" feature on the offending comment or post and it will be reviewed as time allows.

founded 5 years ago
MODERATORS
k_o_t@lemmy.ml
golden_zealot@lemmy.ml
33
Firefox not using IPv6 by default (discuss.tchncs.de)
submitted 2 years ago* (last edited 2 years ago) by nutbutter@discuss.tchncs.de to c/firefox@lemmy.ml
6 comments fedilink hide all child comments
 

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.

you are viewing a single comment's thread
view the rest of the comments
[–] usernamesAreTricky@lemmy.ml 9 points 2 years ago* (last edited 2 years ago) (1 children)

First check if you have ipv6 disabled in Firefox. I think there was a DNS issue on some lemmy instance a while ago where people were turning ipv6 off to work around that (was later fixed) or maybe I am misremembering where that was

Go to about:config then make sure that network.dns.disableIPv6 is false.

[–] nutbutter@discuss.tchncs.de 3 points 2 years ago (1 children)

It is false, I have checked it.

[–] usernamesAreTricky@lemmy.ml 3 points 2 years ago

Hmm, maybe this could be a DNS issue. Are you using DNS over HTTPS on Firefox (check on about:preferences#privacy? If so, what do you have the DNS provider set as?

Also what happens if you go to a website that is ipv6 only such as https://ip6only.me/? Does it fail to connect or does it then actually use ipv6?