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Re: Disabling temporary addresses by default?

Christian Huitema <huitema@huitema.net> Wed, 29 January 2020 05:46 UTC

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Subject: Re: Disabling temporary addresses by default?
To: Gyan Mishra <hayabusagsm@gmail.com>, Fernando Gont <fgont@si6networks.com>
Cc: 6man WG <ipv6@ietf.org>, Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org>
References: <CAKD1Yr11_SSUkCBuQ3-h+eRg0LPZQdhe+h7f0YZy9TiyRWj6mw@mail.gmail.com> <751D59E0-F60B-4FE1-840F-3FEAB82F618F@huitema.net> <c058863d-9e29-3ddb-a020-0ebadef26ad4@si6networks.com> <CABNhwV0KsKN7LQY2D-BJkCtvB40oZCT65EmOCr0oE56c9g7-aQ@mail.gmail.com>
From: Christian Huitema <huitema@huitema.net>
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Date: Tue, 28 Jan 2020 21:46:47 -0800
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On 1/28/2020 9:46 AM, Gyan Mishra wrote:
>
>    The main reason this topic comes has up is due to possible impact
> of usage of the temporary address when it gets deprecated with long
> lived session.  That’s the crux of why this topic is critical and has
> severe operational impact. When the address changes for long lived
> connections from the deprecated temporary address to the new preferred
> address, the session would terminate and have to re-establish, which
> is impacts the user. 

OK, but on the other hand, necessity is the mother of invention. If the
applications that depend on long-lived addressed today realized that
addresses are not long lived in practice, they would most probably
adapt. And there are lots of possible adaptations. For example, TLS
sessions can be resumed quickly. Quic connections can migrate to a new
address. TCP multipath allows for smooth transition from one address to
another. Etc.

-- Christian Huitema

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