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Re: [Int-area] IP Protocol number allocation request for Transparent Inter Process Communication (TIPC) protocol

Joseph Touch <touch@strayalpha.com> Thu, 19 March 2020 23:32 UTC

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From: Joseph Touch <touch@strayalpha.com>
In-Reply-To: <4bad2d30-0220-a836-451d-b01fdba4d098@redhat.com>
Date: Thu, 19 Mar 2020 16:31:50 -0700
Cc: Suresh Krishnan <suresh@kaloom.com>, int-area <int-area@ietf.org>
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To: Jon Maloy <jmaloy@redhat.com>
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Subject: Re: [Int-area] IP Protocol number allocation request for Transparent Inter Process Communication (TIPC) protocol
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> On Mar 19, 2020, at 3:11 PM, Jon Maloy <jmaloy@redhat.com> wrote:
> 
> On 3/18/20 12:04 AM, Joseph Touch wrote:
>> Hi all,
>> 
>> I’m quite confused by this request.
>> 
>> It seems like they either have an implementation issue (in Linux). 
> Linux "passthru" GSO is implemented so that any IP based protocol which wants to benefit 
                                          ^^^^^^^^^^^^^
> from it needs its own IP protocol number. Doing this generically through the already existing 
> UDP protocol number is not possible, because GSO on a host must be implemented 
> specifically (e.g., regarding segmentation) per carried protocol. That is just a fact, and not 
> an implementation issue.  

How is that not exactly an implementation issue?

...
> IP addresses are no good in the *user API*, because they are location bound. 
> That is also why DNS was invented, I  believe. 


DNS names are intended to be a human-rememberable alias to an IP address. They do not indicate a location any more than an IP address does or does not.

…
> Whatever the viewpoints, TIPC is currently what it is,

As is IP...

> and rather than focusing on the motivation
> for certain implementation choices and how they work, I think IETF should consider the fact
> that this is a well-established service used by dozens of small and big companies, running high-volume
> traffic at hundreds of telco sites around the globe. They should also consider that TIPC has 
> existed as a stable and well-maintained implementation in all major Linux distros for many years.

I won’t focus on the bad decisions in TIPC if you won’t ask for a protocol number -deal?

Joe

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