Ubuntu Linux - Suggestions needed

Stig Venaas stig.venaas at uninett.no
Fri Apr 13 15:33:01 CEST 2007

Soininen Jonne (NSN FI/Espoo) wrote:
> Hi,
> How do you know if it just was a domain with no AAAA instead of a failure in
> the network?
> I think Remi's proposal not quering for AAAA if you just have link-local
> should work. It also would be rather safe.

Sounds good. But what would you do if you are on a system that supports
6to4 or Teredo out of the box? E.g. a Vista box would always have IPv6
connectivity sort of...


> Cheers,
> Jonne.
> On 4/3/07 11:15 AM, "ext Mikael Karlsson" <mikael at karlsson.com> wrote:
>> Andrew Alston skrev:
>>> a.) Not impact of fallback / resolution speeds on non-v6 enabled networks,
>>> networks that filter v6 responses, and points where there are cheap dsl
>>> routers that force a timeout on a request of a quad-a record rather than
>>> returning NXDOMAIN
>>> b.) Not force the user to have to answer questions as to whether or not they
>>> want v6 (they say a user mustn't be prompted)
>>> c.) Leave IPv6 enabled by default, or get it to auto-enable on v6 compatible
>>> networks.
>> How about trying to resolve AAAA and A for ubuntu.com and if AAAA fails,
>> disable ipv6.
>> "Your firewall seems horribly broken, I will disable ipv6 for now"
>> /Mikael

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