Re: I-D ACTION:draft-nward-v6ops-teredo-server-selection-00.txt

[Perry Lorier <perry@coders.net>]

Nathan Ward wrote:
> On 5/07/2007, at 4:29 AM, Rémi Denis-Courmont wrote:
> 
>> Le mercredi 4 juillet 2007, vous avez écrit :
>>> Anycast is good, but I think it's important that the clients are
>>> default configured with a vendor agnostic DNS name that points to the
>>> anycast address as well.
>>
>> I have not seen any precedent of vendor-agnostic DNS name (apart from
>> example.TLD that is). Not only that, but who would maintain the DNS
>> zone that clients would run into when the ISP does not "hijack" the
>> name?
> 
> I've not seen precedent of vendor-default DNS names for network
> functions, either (or at least, that I can recall on short notice :-).
> I'm not sure that lack of precedent is a good reason to not do something.

Web browsers have "Web Proxy Automatic Discovery".  They look up the
name "wpad" which gets searched for in the usual dns search path.  Thus
if you're 192-0-2-1.dsl.example.com it will look up
"wpad.dsl.example.com" then "wpad.example.com".  If either of these
exist then it will use them.

To be honest this system is fragile and unreliable, but it is precedent
for a "name" to find a service based on a hard coded dns name.