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Re: Next steps on Extension Header Insertion

"Stefano Previdi (sprevidi)" <sprevidi@cisco.com> Tue, 08 November 2016 18:44 UTC

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From: "Stefano Previdi (sprevidi)" <sprevidi@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Subject: Re: Next steps on Extension Header Insertion
Thread-Topic: Next steps on Extension Header Insertion
Thread-Index: AQHSOTB6lAiMBxGjIkCsW/LvP66R7qDPbCQRgABVkQA=
Date: Tue, 08 Nov 2016 18:44:31 +0000
Message-ID: <F0EE4B37-5031-4FA4-9CA8-9C2E1F8BEAE2@cisco.com>
References: <B291E9E6-A803-423F-BFA5-87A74DCFB784@gmail.com> <dfe00826-1bcd-80ae-e6dc-7763c506cbe4@si6networks.com> <9CA73891-B4FA-47DF-82E1-A4867DBC6A3F@steffann.nl> <3C56AA77-18E4-4254-BB6A-A447CE115392@employees.org> <CAO42Z2zQ9ZVR8ih9CzY=3ytpLQJ9UCp37SM9N92cLpbfb4wyTQ@mail.gmail.com> <B5CA03B6-FB25-48F4-BF48-6F4C18A96DB4@employees.org> <63d048ed-63aa-e68a-f390-b6541d42e4ac@si6networks.com> <C63B5BB5-6F7F-405A-BC25-B1C48D58F286@cisco.com> <CAO42Z2w8oA3HXztTzBUFs7KWL4T9GPV_vWbP=m2r02JdPW_kiw@mail.gmail.com> <A8E70AF3-A132-4FAB-8F69-19D39B8E98B5@cisco.com> <12618a6b-b4a0-4254-391a-a6c3ab9367ab@gmail.com> <F6F6BD6B-73F8-4CB1-B3C2-CDA6908D13EA@employees.org> <4E2C6B1A-ADD9-489D-8964-82D5C26E5ED8@cisco.com> <1edb5985-5543-b384-4620-db68f5bed9ed@gmail.com>
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> On Nov 8, 2016, at 7:37 PM, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
> On 08/11/2016 23:10, Stefano Previdi (sprevidi) wrote:
>> 
>>> On Nov 8, 2016, at 9:18 AM, otroan@employees.org wrote:
>>> 
>>>> So, the *fact* is that the current text is ambiguous, since it has been interpreted
>>>> both ways. As standards writers, we should hate ambiguity.
>>> 
>>> As standards writers, we should love interoperability.
>> 
>> 
>> agreed.
> 
> Yes. Broken PMTUD is not very interoperable.


there are implementations currently deployed allowing you to cope with the effective mtu of the link so to take into account expected overhead (mpls reported the issue 20 years ago).


s.


> 
>   Brian

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