[Dnsmasq-discuss] IPV6 preference

[Ray Klassen]

further on this: The site that I am trying to nail down to ipv6 only
traffic is of course netflix. and it seems like their dns has an
extremely low time to live probably so they can keep switching routes
to avoid saturating any. Sometimes there are AAAA addresses available
and sometimes not. It seems that if I 'watch host -t AAAA
movies.netflix.com' and connect when ipv6 addresses appear I can
ensure that I can connect to them over the tunnel. It would be great
to override those TTL values and give the ipv6 addresses some
persistence. Otherwise one is stuck with the non-selection that
netflix offers on this side of the border

On Thu, May 9, 2013 at 5:04 AM, /dev/rob0 <rob0 at gmx.co.uk> wrote:
>> On Wed, May 8, 2013 at 10:25 AM, /dev/rob0 <rob0 at gmx.co.uk> wrote:
>> > On Wed, May 08, 2013 at 05:43:01AM -0700, Ray Klassen wrote:
>> >> Is there a way of configuring dnsmasq to always return an
>> >> ipv6 address on a DNS request if there are both ipv4 and
>> >> ipv6 available?
>> >
>> > I wouldn't think so. A client either asks for an A record
>> > (ipv4) or AAAA (ipv6), it does not ask for "an address".
>> >
> On Wed, May 08, 2013 at 01:58:42PM -0700, Ray Klassen wrote:
>> Huh. I would have thought the request by the application would
>> be similar to running host.
>
> An application uses a gethostbyname() call via its system C
> libraries.[1] But most applications do not directly query DNS.
> host(1) is, of course, an exception.
>
>> as in
>>
>> #host google.com
>>
>> that returns a list of both ipv4 and ipv6 entries...
>
> The behaviour of host(1) is described in its manual. See the "-t"
> option. You are seeing the default behaviour (with no -t query type
> specified.)
>
>
> [1] Whilst it might appear that I know what I am talking about, I
>     confess I really do not. I have no knowledge of the low-level
>     intricacies of C libraries and their resolver(5) functions. I do,
>     however, understand the general flow: which software parts do
>     which things.
> --
>   http://rob0.nodns4.us/ -- system administration and consulting
>   Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
>
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