Re: [DNSOP] I-D Action: draft-bellis-dnsext-multi-qtypes-08.txt

[Paul Wouters <[e-mail]>]

On Fri, 17 Nov 2023, Ray Bellis wrote:

>>  Last time this came around I also suggested instead of n times QT
>>  entries, to use the same method as NSEC does for conveying which RRtypes
>>  are covered using a single bitmap:
>>
>>  https://datatracker.ietf.org/doc/html/rfc3845#section-2.1.2
>
> Speaking personally, I am not a fan of NSEC bitmaps when used to encode a 
> small and possibly sparse list of QTYPES.   It's relatively complicated to 
> encode / decode and is often inefficient.

I think it would be unwise to make assumptions on how people will use
this feature. They might want to ask for many more records along with
A/AAAA records. If we change a core DNS feature, it should not designed
for a specific DNSSD use case of HTTPS.

Paul