> On 9. 7. 2025, at 16:43, John R Levine <[email protected]> wrote:
> 
> On Wed, 9 Jul 2025, Petr Špaček wrote:
>>> https://docs.google.com/presentation/d/1snTpkDcRmJN8bbGx9XrOt5taUdS1xSElMB1Ok8s7Kko
>> 
>> I take that as an argument to forbid it!
>> 
>> 107 sounds like perfectly tractable number to fix. The two flag days had 
>> waaaay wider reach, for example, and way more domains got fixed.
> 
> I still don't see the point.
> 
> That was a snapshot from a year ago.  If I did it again, the list would be 
> different.  We wouldn't have just to fix the collisions in those 107 domains,

> we'd have to upgrade *everyone's* software to prevent them in the future.

Yes, great. That's an excellent operational advice to not run old crap.

> Getting rid of all of the potential collisions would be a great deal of work.

I disagree. It is not a great deal of work. It is a part of normal operational 
practice.
Bugs in software gets fixed, operators upgrade the software.

> For some people it might just be a new version of bind, but we don't all run 
> bind, and as the draft noted, if there are multiple signers or HSMs the 
> changes are not trivial.
> 
> And for what?  Since the keytrap stuff last year caches already limit 
> collisions to 2 or 3, realistically it's never more than 1, and the long tail 
> means caches will be making this check forever.  What's the benefit,
> other than perhaps aesthetic, of dropping the nominal limit from 2 to 0?


--
Ondřej Surý (He/Him)
[email protected]

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