Re: I-D Action: draft-smith-6man-in-flight-eh-insertion-harmful-00.txt

Nick Hilliard <nick@foobar.org> Sun, 13 October 2019 10:25 UTC

Subject: Re: I-D Action: draft-smith-6man-in-flight-eh-insertion-harmful-00.txt
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: 6man <ipv6@ietf.org>
References: <157059901123.30422.11220423219059958820@ietfa.amsl.com> <362b80f7-fedc-7227-2931-0006e6b81812@gmail.com> <f2548b48-2d8d-01f0-f05c-0027a5cdeb91@foobar.org> <57b3a7bd-3dc3-d8be-0ac4-7218abdd94d8@gmail.com>
From: Nick Hilliard <nick@foobar.org>
Message-ID: <51fdb3bc-3155-c0c8-a34b-f68868885a24@foobar.org>
Date: Sun, 13 Oct 2019 11:25:02 +0100
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Brian E Carpenter wrote on 13/10/2019 01:36:
> The packet is too dumb to know anything ;-). My question is how each
> node it traverses knows. Indeed, Mark's draft describes a scenario
> where the controlled domain argument breaks, because the exit node
> might not know that the packet had suffered EH insertion. The
> draft-voyer- scenario is not like that, because the affected IPv6
> headers are created locally and identifiable as such.

the world isn't nearly this pigeonholed though.  The edge around this 
"controlled domain" that you're implicitly suggesting is sharply-defined 
is in reality more of a blurry smear.  Think tunnels, leaks, back-doors, 
"SD-WAN" (whatever that means), policy routing, routed VPNs, etc.

If the ietf wants to define a new ipv6-like protocol which is not 
guaranteed to be interoperable with 8200, there's still space in 
www.iana.org/assignments/version-numbers to accommodate this :-)

Nick

Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Brian E Carpenter
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Nick Hilliard
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Brian E Carpenter
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Joel M. Halpern
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Mark Smith
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Nick Hilliard
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Gyan Mishra
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Gyan Mishra
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Brian E Carpenter
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Nick Hilliard
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Mark Smith
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Brian E Carpenter
Re: Re: I-D Action: draft-smith-6man-in-flight-eh… li zhenqiang
Re: Re: I-D Action: draft-smith-6man-in-flight-eh… Mark Smith
Re: Re: I-D Action: draft-smith-6man-in-flight-eh… Mark Smith
Re: Re: I-D Action: draft-smith-6man-in-flight-eh… li zhenqiang
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Stewart Bryant
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Mark Smith
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Fernando Gont
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Mark Smith
Re: Re: I-D Action: draft-smith-6man-in-flight-eh… Gyan Mishra
Re: I-D Action: draft-smith-6man-in-flight-eh-ins… Fernando Gont