On Jul 8, 2025, at 11:33 AM, Ben Schwartz <[email protected]> wrote:


________________________________
From: Paul Hoffman <[email protected]>
Sent: Tuesday, July 8, 2025 11:07 AM
To: Ben Schwartz <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: [Ext] [DNSOP] Re: DNSOPFwd: New Version Notification for 
draft-tojens-dnsop-do-not-accommodate-udp53-00.txt


On Jul 8, 2025, at 08:01, Ben Schwartz <[email protected]> wrote:
>
> I think it could be interesting to have an informational draft that:

Interesting or useful? I don't see how this, or 
draft-tojens-dnsop-do-not-accommodate-udp53 are at all useful other than to say 
"haha, we're smarter than that now".

I once needed to implement a very simple DNS forwarder in an unusual context 
where supporting UDP was tricky.  In that case, we decided on exactly this 
behavior: always return a trivial TC=1 to force DNS over TCP.  It worked fine.  
I’ve also occasionally needed to implement TCP-only DNS stub behaviors, for 
similar reasons.

Having some documentation about this option might be helpful guidance for 
future DNS implementors in situations where simplicity is more important than 
performance.

—Ben
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