[Dnsmasq-discuss] extend filter-A to filter specific domains

[Peter Tirsek]

On Fri, 13 Jan 2023, wkitty42 at gmail.com wrote:

>>> I'm not 100% happy with the patch, but I hope to be able to submit 
>>> it tomorrow to get some suggestions and feedback.
>> Did you forget to attach your patch(es) or sent them off-list? I 
>> don’t see any attachments on this thread.
> i'm not peter but look to the next day (Jan 5th) for the thread with
> "[RFC PATCH] Add support for blocking A or AAAA queries per domain"

Correct; as mentioned I had hoped to publish it the following day.

That being said, after looking a little further into the problem, I've 
realized that an NXDOMAIN response is not really the proper behavior in 
this situation. It would be better to send a NODATA response, otherwise 
downstream servers may decide to cache the whole domain as nonexistent 
instead of only the AAAA record. It's probably as simple as changing 
the "rc = F_NXDOMAIN" line to "rc = F_NOERR" in my patch, but I haven't 
had a chance to try it out properly yet.

-- 
Peter Tirsek