John R Levine <[email protected]> wrote:
>
> Sounds like an AORAAAA record with flag bits would help there, too, so long as
> the authoritative server returned it in the addition section.  The client asks
> for the MX, and gets the AORAAAA so it doesn't have to do A or AAAA requests
> separately.

Doesn't solve the problem, because you can't infer anything about the
existence of a record based on it not appearing in an additional section.

> Alternate grosse hackque: some way to return an anti-result in the additional
> section that says there are no records of this type for this name, that can be
> negative cached.

That would help.

Tony.
-- 
f.anthony.n.finch  <[email protected]>  http://dotat.at/
South-east Iceland: Westerly, backing southerly or southeasterly, 5 to 7,
perhaps gale 8 later. Rough or very rough. Wintry showers, occasional rain
later. Good, occasionally poor.
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