[Dnsmasq-discuss] trouble with conflicting DNS resolution on MacOS

[Simon Kelley]

On 1/21/25 22:30, Bernd Prager wrote:
> 
> On 1/11/25 5:35 AM, wkitty42 at gmail.com wrote:
>> On 1/10/25 6:49 PM, Bernd Prager wrote:
>>> When I do the same from the MacBook I get no related log entries at all.
>>
>> could it be doing DNS-over-HTTPS?
>>
> For anyone facing a similar issue, I found the hint for my solution in 
> this post: https://usercomp.com/news/1401699/sequoia-split-dns-lookup- 
> on-macos
> 
> It appears to happen with MacOS Sequoia, if the DNS does not support 
> EDNS0 packets.
> In this case the option "Limit IP address tracking" needs to be disabled 
> for each network interface, which in my case was "on" by default.
> 
> Can the EDNS0 option be supported via dnsmasq?

The page at that link doesn't have much real information about what is 
actually going on. EDNS0 contains a whole set of options, some of which 
are supported by dnsmasq and some not.

I guess this is about the RFC-7871 client-subnet ENDNS0 option, but 
there's not really enough to go on in page to be sure what's happening.


Simon.


> 
> Thank you.
> 
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