[dns-wg] Lower TTLs for NS and DS records in reverse DNS delegations

Anand,

On 29/11/2021 12.59, Anand Buddhdev wrote:

> We propose to lower, in the first quarter of 2022, the TTL on NS records 
> to 86400 and on DS records to 3600.

I support this change.


I would also support:

- Setting the TTL on NS records even lower. As a data point, at least 
one ccTLD (.CL) already has a 3600 TTL on NS records.

- Allowing LIR to set their own TTL on NS/DS records explicitly.

- Allowing LIR to request that the TTL on NS/DS records get set from the 
child (either from the TTL on the NS in the child's servers or from the 
CDS/CDNSKEY TTL).

- Allowing LIR to choose from a set of pre-defined TTL, as suggested by 
Gregory Brzeski.

- Adopting a back-off algorithm as suggested by Petr Špaček.


Cheers,

--
Shane
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