Re: "DNS-4to6 automatic mapping" - No more DNS-ALGs & 6then4 DNS queries

[Gert Doering <gert@space.net>]

Hi,

On Wed, Nov 28, 2007 at 10:26:21PM -0600, Todd T. Fries wrote:
> I'm sorry, turning off IPv6 routing does not imply the userland should not
> and cannot query for v6 addresses.  That's just bogus.  

There's a difference between

 "the application explicitely asks for AAAA records"

and

 "the application wants to connect to a given host, by whatever means"

in the first case, it's clear that the operating system has no reason
to stand in the application's way.

In the second case, querying for AAAA/A6 addresses makes not very much 
sense if the OS *knows* that it has no way to actually reach such an 
address (e.g.: the IPv6 stack is not loaded).

Gert Doering
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