
Firefox can support IPv6 without any problem. Unless you’ve been disabled the Firefox’s IPv6 resolve before this.
From the picture above, it is pretty straight forward on how to re-enable back IPv6 DNS resolve for Firefox.
At the address bar, just type in “about:config”, then you will be greeted with the “This might void your warranty” page.
Just click on the “I’ll be careful, I promise!” and proceed. Since when Firefox got warranty anyway? It is a free software after all.
Now, the advance configuration page will appear. Just type in “ipv6″ in the “Filter” area, then you can see the “network.dns.disableIPv6″. Just click it and press enter, it will toggle back to “false”.
Make sure the “Value” is false, because we want to prevent the disability of IPv6.
Ok, now you are free to close that page and continue to browse any IPv6 capable websites.

The Firefox Can’t Resolve IPv6 Domains? by Garfield, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
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Lewis Chong says:
Dear friends,
I am a newbie [non-IT] with Ubuntu 11.10 in a Lenovo G470. My comp cannot access WPA2, it keep asking for the password but it can get into WEP connections. Can anyone help? Thank you in advance, regards. CCW.
Garfield says:
If your AP is using WPA/WPA2 TKIP+AES, make sure when you type in ur password when prompted by the Ubuntu, you select the correct option.
But some wireless cards, do have some issue with Ubuntu’s default driver.
So I also dun dare to confirm with you what problem you are actually facing.