teredo.ipv6.microsoft.com off?

[Martin Millnert]

On 19 jul 2013, at 11:30, Marco Sommani <marco.sommani at iit.cnr.it> wrote:

> On 18/lug/2013, at 22:09, Brian E Carpenter <brian.e.carpenter at gmail.com> wrote:
> 
>> Wait... I had the impression that iff there was no other IPv6 connectivity,
>> Teredo was used in older Windows because of the generic "prefer IPv6" rule.
>> The default RFC 3484 table covers 6to4 but not Teredo.
>> 
>> Recent Windows deprefs Teredo of course.
>> 
>>  Brian
> 
> Right. The policy table in RFC 3484 has no specific entry for prefix 2001::/32. This is corrected in the table of RFC 6724:
> 
>      Prefix        Precedence Label
>      ::1/128               50     0
>      ::/0                  40     1
>      ::ffff:0:0/96         35     4
>      2002::/16             30     2
>      2001::/32              5     5
>      fc00::/7               3    13
>      ::/96                  1     3
>      fec0::/10              1    11
>      3ffe::/16              1    12
> 

From what I recall from MS representatives, gethostbyname() etc does not send AAAA queries, if "nothing better is configured".  Would this be controlled by the table above (6724)?

/Martin - (native v6 FTW)