The "custom" attribute is only needed for DNS record types which are not 
already permitted above a zone cut.

DS is one of the permitted records, so the "custom" attribute would not be 
needed.

G.

> On 12 Jul 2024, at 12:41, Andrew Newton (andy) <a...@hxr.us> wrote:
> 
> 
> On 7/12/24 05:41, Gavin Brown wrote:
>>> ### DELEG as example
>>> 
>>> ```
>>> 298 <ttl:ttl
>>> 299 for="custom"
>>> 300 custom="DELEG">3600<ttl:ttl>
>>> ```
>>> 
>>> Consider a record that is already registered with IANA, TLSA for example.
>>> 
>> As I understand it, TLSA is not appropriate for publication at a delegation 
>> point, so using TLSA here would not make any more sense than DELEG. Perhaps 
>> this should just be some placeholder value, such as MYCUSTOMTYPE?
>> 
> 
> DS maybe?
> -andy

--
Gavin Brown
Principal Engineer, Global Domains & Strategy
Internet Corporation for Assigned Names and Numbers (ICANN)

https://www.icann.org

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