On 15. 09. 20 13:16, Yasuhiro Orange Morishita / 森下泰宏 wrote:
> Petr-san,
> 
> Thank you for your clarification :-).
> But I have another question.
> 
> In my understanding, the official spelling of the day is "DNS flag
> day".  In the 2019 webpage, all of the spellings is lowercase.
> 
> But the spellings are not unified in the 2020 webpage.
> The <title>...</title> and top of the official webpage's spellings
> are lowercase, but the content includes the capitalized one.
> 
> This may be a trivial question, but is important for providing the
> information to the related parties, I think.
> It would be helpful if you could clarify it.

It would be great if someone with strong opinion or expertise in English could 
create merge request to unify it:
https://github.com/dns-violations/dnsflagday

I'm not native speaker so I would have to flip coin to decide :-)

Petr Špaček  @  CZ.NIC


> 
> -- Orange
> 
> From: Petr Špaček <petr.spa...@nic.cz>
> Subject: Re: [dns-operations] DNS Flag Day 2020 will become effective on 
> 2020-10-01
> Date: Wed, 9 Sep 2020 10:39:54 +0200
> 
>> Hi Orange-san,
>>
>> On 09. 09. 20 7:00, Yasuhiro Orange Morishita / 森下泰宏 wrote:
>>> Hi Petr-san,
>>>
>>> I tested some auth servers and resolvers by online checker in the
>>> official website.
>>>
>>> But I feel that both of them display "GO" even if EDNS buffer size is
>>> not set to 1232.  Is this by design?
>>
>> This is fine as long as all the authoritative servers work over DNS-over-TCP 
>> and respect EDNS buffer size sent by resolvers.
>>
>> The reason is that the effective EDNS buffer size is the minimal value from 
>> (client, server) pair. Consequently, once resolvers update their defaults, 
>> the change will become effective without any changes on the auth side.
>>
>> Lower EDNS buffer size might force fallback to TCP if auths are sending 
>> longer answers - that's why the web tester is checking availability of 
>> DNS-over-TCP.
>>
>> I hope it helps.
>>
>> If you can point to a section on https://dnsflagday.net/2020/ which should 
>> contain this answer I will be happy to add it there.
>>
>> Have a nice day!
>> Petr Špaček  @  CZ.NIC
>>
>>
>>
>>>
>>> -- Orange
>>>
>>> From: Petr Špaček <petr.spa...@nic.cz>
>>> Subject: [dns-operations] DNS Flag Day 2020 will become effective on 
>>> 2020-10-01
>>> Date: Tue, 8 Sep 2020 12:04:39 +0200
>>>
>>>> Dear DNS people.
>>>>
>>>> We are happy to announce next step for DNS Flag Day 2020.
>>>>
>>>> Latest measurements indicate that practical breakage caused by the 
>>>> proposed change is tiny [1]. In other words we can conclude that the 
>>>> Internet is ready for the change.
>>>>
>>>> The long delayed DNS Flag Day will become effective on 2020-10-01 (October 
>>>> 1st 2020)!
>>>>
>>>> Detailed information including test tools and technical description of the 
>>>> change can be found at https://dnsflagday.net/2020/ .
>>>>
>>>> For questions please use dns-operations@lists.dns-oarc.net mailing list.
>>>>
>>>> [1] 
>>>> https://github.com/dns-violations/dnsflagday/issues/139#issuecomment-673489183
>>>>
>>>> -- 
>>>> Petr Špaček  @  CZ.NIC
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