Re: [DNSOP] Call for Adoption: draft-song-atr-large-resp

Paul Vixie <paul@redbarn.org> Mon, 21 January 2019 12:50 UTC

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From: Paul Vixie <paul@redbarn.org>
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Subject: Re: [DNSOP] Call for Adoption: draft-song-atr-large-resp
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Peter van Dijk wrote on 2019-01-21 11:22:
> Hello,
> 
> On 18 Jan 2019, at 18:55, Benno Overeinder wrote:
> 
>> ...
>> This starts a Call for Adoption for: draft-song-atr-large-resp
> 
> I oppose adoption. ...
likewise. we should not avoid fragmentation in this particular way. that 
is, we can use persistent TCP, or we can avoid sending large messages by 
shaping their contents better (smaller signatures, less additional data).

in fact i would prefer to embrace fragmentation and fix it. so, in 
addition to my reasoning above, i am also biased against the goal 
itself. (i say this not to persuade, but for full disclosure.)

in ~1998, the IETF DNSIND WG persuaded me to remove the MD bit from 
EDNS0, and the reasons given then (see the archives) are all still valid 
today, especially given that IPv6 made fragmentation worse not better 
than it was in V4, and it was pretty broken in V4, the absolute value of 
this negative bar was rather high.

-- 
P Vixie