Re: [arch-d] Fiddling with IP packets in the network, IPv6-style (Fwd: Question about SRv6 Insert function)

[Fernando Gont <[e-mail]>]

On 5/9/19 12:08, Alexandre Petrescu wrote:
> 
> 
> Le 05/09/2019 à 02:47, Fernando Gont a écrit :
>> Folks,
>>
>> There seems to be ongoing working group item in the spring wg
>> (https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-01)
>>
>> that essentially proposes the insertion of IPv6 Extension Headers by
>> middle boxes in the middle of the network, which goes against a very
>> explicit requirement in the IPv6 spec (RFC8200) -- that notes that EHs
>> cannot be inserted in the middle of the network.
>>
>> This begs a number of questions (e.g., how come that one wg is working
>> on something that goes against a spec that is not under its charter).
>>
>> But given this is an architecture list, I wonder if anybody has a say on
>> the topic? (including the IAB). Is that the way IPv6 is expected to
>> work? What can we expect from IPv6?
> 
> Can we expect IP at large to touch headers of end user packets?  No. Can
> we expect it in a 'limited-domain'?  Yes, and I'd say INFORMATIONALly.

Spoiler: You can't guarantee with 100% certainty that packets will not
leak out from a "limited domain".


-- 
Fernando Gont
SI6 Networks
e-mail: [e-mail]
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