[Dnsmasq-discuss] Option to skip 0x20 encoding

[Simon Kelley]

I did wonder if this might happen. In an ideal world an option wouldn't 
be necessary, but you've shown that it is.

Can you share with us what the misbehaving server is?

I guess some logging suggesting the option when this occurs would be 
useful too.

Cheers,

Simon.


On 03/02/2025 17:27, wornandrew via Dnsmasq-discuss wrote:
> Hi.
> I've ran into a misbehaving server which doesn't preserve case in replies.
> (e.g. if query is exAMPLE.Com then the response is example.com)
> This causes dnsmasq to drop the replies as malicious.
> 
> This was not noticeable before 0x20 encoding was implemented in 2.91
> as clients only ever sent lowercase queries. But now dnsmasq mangles
> the case of all forwarded names with no apparent way to avoid this.
> 
> It would be nice to have an option to bypass 0x20 encoding for forwarded queries and instead send them as is.
> 
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