Re: [Int-area] WG Adoption Call: IP Fragmentation Considered Fragile

Joe Touch <touch@strayalpha.com> Mon, 27 August 2018 08:27 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Mon, 27 Aug 2018 01:27:43 -0700
Cc: Tom Herbert <tom@herbertland.com>, int-area <int-area@ietf.org>, Toerless Eckert <tte@cs.fau.de>, intarea-chairs@ietf.org
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To: Ole Troan <otroan@employees.org>
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Subject: Re: [Int-area] WG Adoption Call: IP Fragmentation Considered Fragile
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> On Aug 26, 2018, at 11:55 PM, Ole Troan <otroan@employees.org> wrote:
> 
> Joe,
> 
>>> 
>>>> On 26 Aug 2018, at 23:12, Joe Touch <touch@strayalpha.com> wrote:
>>>> 
>>>> As I’ve mentioned, there are rules under which a NAT is a valid Internet device, but it is simply not just a router.
>>> 
>>> If there really was, can you point to where those rules are? Describing the behavior of the host stack and applications?
>> 
>> The principles are described and explained here:
>> 
>> Touch, J: Middlebox Models Compatible with the Internet. USC/ISI (ISI-TR-711), 2016. (
>> 
> 
> I don’t want to dismiss this completely, but it hand waves over how applications are supposed to work in this new Internet architecture. 
> You can define your way out of breaking end-to-end, but that doesn’t mean you can ignore all the issues of NAT traversal.

You’ve missed the point - if the middleboxes describe behave as required, apps do not need to change. They work as they would in an Internet without those boxes.

Joe