Re: RFC4941bis: consequences of many addresses for the network

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 24 January 2020 17:23 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: otroan@employees.org
cc: Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com>, 6man WG <ipv6@ietf.org>
Subject: Re: RFC4941bis: consequences of many addresses for the network
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Date: Fri, 24 Jan 2020 12:23:55 -0500
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otroan@employees.org wrote:
    >> The question of an address per transport connection is why would you do that?
    >> In many IPv4 installations, the NAT box has state per flow. So having an IPv6
    >> address per transport connection doesn't seem beyond what we can do.

    > On reason might be because the application uses the temporary address
    > in a way that taints it.
    > E.g. the address is used in a connection where the user is identified
    > through authentication.
    > That address is now tained from thew perspective of privacy, and should
    > not be used for other connections.

And so the application would like to give a hint to throw away that address *NOW*?
Or maybe the application would like to ask the OS for a *per-connection*
temporary address?

    > I think we need some text in 4941 discussing this, and also give a
    > recommendation for host behaviour. And perhaps also for network
    > configuration.

+1


--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-