This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

What risks do I take by disabling IPv6 in firefox?

  • 1 antwoord
  • 1 het hierdie probleem
  • 5 views
  • Laaste antwoord deur cor-el

anuragmondol22
anuragmondol22
more options

Recently I was facing an Issue with my Firefox, it was not connecting to webpages after failing to do a TLS handshake with the server, I was suggested to disable IPv6 in my Firefox to solve the issue. I did the same and it works well now. But I'm curious what the risks I took by disabling IPv6 from Firefox.

Recently I was facing an Issue with my Firefox, it was not connecting to webpages after failing to do a TLS handshake with the server, I was suggested to disable IPv6 in my Firefox to solve the issue. I did the same and it works well now. But I'm curious what the risks I took by disabling IPv6 from Firefox.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

It is not really a risk. I think that currently all (major) websites can be reached via IPv4. When you enable IPv6 in Firefox then Firefox will first try to connect via IPv6 and if that doesn't work (timeout) fallback to IPv4, so if a DNS lookup fails because a website only has a IPv6 address then you won't be able to access this website. There are some IPv6 test sites that can only be accessed via IPv6 and that is it for now.