On Mon, May 25, 2020 at 12:34 PM Lanlan Pan <abby...@gmail.com> wrote:

>
>
> Shumon Huque <shu...@gmail.com> 于2020年5月22日周五 下午11:00写道:
>
>> On Fri, May 22, 2020 at 10:52 AM Joe Abley <jab...@hopcount.ca> wrote:
>>
>>> On 21 May 2020, at 16:07, Warren Kumari <war...@kumari..net
>>> <war...@kumari.net>> wrote:
>>>
>>> Has anyone surveyed which of the following category of things are
>> promoting glue to answer: (1) other TLD authoritative services, (2)
>> authoritative server software implementations, (3) "public" (contentious
>> term I know) resolvers, and (4) resolver software implementations?
>>
> some resolvers send the NS_DOMAIN A query to glue ns ip, get the response
> from authority,  and overwrite the glue..
> the TTL of the authority response  is shorter than the glue.
>

(With no hats)

While in general the TTL of the authority response is shorter than the
glue, I can personally attest to domains
out in the wild, that at one point had authority TTL much larger than the
glue TTL.

tim
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