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Re: Ephemeral addressing [was Re: 64share v2]

Fernando Gont <fgont@si6networks.com> Thu, 12 November 2020 16:07 UTC

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Subject: Re: Ephemeral addressing [was Re: 64share v2]
To: Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org>, Ole Troan <otroan@employees.org>
Cc: 6man WG <ipv6@ietf.org>
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From: Fernando Gont <fgont@si6networks.com>
Message-ID: <57f29db7-2811-8c0f-28dd-4f5f43bf59cc@si6networks.com>
Date: Thu, 12 Nov 2020 13:06:37 -0300
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On 11/11/20 10:55, Lorenzo Colitti wrote:
> QUIC supports connection migration. See for example this draft:
> 
> https://tools.ietf.org/html/draft-tan-quic-connection-migration-00
> 
> In hindsight, the real reason mobility is hard is that TCP does not 
> provide its own session identifier and instead relies on the lower-level 
> identifiers (i.e., IP addresses) to identify its connections. 

Indeed, TCP checksuming the network attachment point (IP address) rules 
out mobility.

THe approach (mobile IP) of trying to make addresses (a 
location-dependent identifier) mobile (hence "location-independent") 
doesn't seem to be the best one.

And yes, given what we have, it would seem dealing with it at transport 
is what's feasible and deployable.

-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492

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