On 19 jul 2013, at 11:30, Marco Sommani <[email protected]> wrote:

> On 18/lug/2013, at 22:09, Brian E Carpenter <[email protected]> 
> 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)

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