How to turn off IPV6

Jonas Norlander jonorland at
Sun May 10 07:48:44 BST 2009

On Sun, May 10, 2009 at 1:15 AM, Clay Weber <claydoh at> wrote:
> On Saturday 09 May 2009 6:50:52 pm Clay Weber wrote:
>> On Saturday 09 May 2009 6:04:48 pm pkaplan1 at wrote:
>> > How can I inactivate IPV6 in 9.04? The instructions on the wiki are for
>> > 8.04 and earlier and refer to files whose names have obviously changed.
>> > Paul
>> A google search on "jaunty ipv6"
>> brought me this:
>> ipv6 is built into the kernel now, so either of the 2 methods described are
>> required. I didn't notice any speedup here, but I do use OpenDNS which
>> speeds address lookups a lot.
> But it doesn't stick after a reboot :(
> Unless it is your router that doesn't support ipv6, I suggest trying out
> if you are experiencing slow page lookups

It should be possible to add "net.ipv6.conf.all.disable_ipv6=1" to
your /etc/sysctl.conf so it will be enabled at boot.
I have _not_ tested it and I'm running Intrepid.

/ Jonas

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