Question about this site web.da-us.citibank.com with ttl = 0

[Thomas Schulz]

In article <e0c0rn$eb4$1 at sf1.isc.org>,  <lingcherd at gmail.com> wrote:
>Is AAAA record mandatory? How does it cause problem like I described?
>
>Thanks!
>...
>ling

It is not necessary to have an AAAA record, but the server does need to
respond to such a query with a no such record response.  Otherwise
you will have to wait until your machine times out and stops waiting
for a response.
-- 
Tom Schulz
schulz at adi.com