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Re: RFC4941bis: consequences of many addresses for the network

"Pascal Thubert (pthubert)" <pthubert@cisco.com> Fri, 24 January 2020 21:12 UTC

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>
CC: Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com>, "ipv6@ietf.org" <ipv6@ietf.org>
Subject: Re: RFC4941bis: consequences of many addresses for the network
Thread-Topic: RFC4941bis: consequences of many addresses for the network
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Date: Fri, 24 Jan 2020 21:12:47 +0000
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It takes a bit more than that but agreed.
Really the router needs to know which addresses are used and which cease to exist. Even if the host only uses 8 the router cannot infer which one.

Regards,

Pascal

> Le 24 janv. 2020 à 18:23, Michael Richardson <mcr+ietf@sandelman.ca> a écrit :
> 
> 
> Philip Homburg <pch-ipv6-ietf-6@u-1.phicoh.com> wrote:
>> However, given the desire to fit everything in SLAAC, what is missing at
>> the moment is a way for the network to express intent.
> 
>> The most basic way would be for a flag that disables temporary addresses.
> 
>> A more adavanced option would be specify limits on the number of temporary
>> addresses and possibly ways to register/deregister an address. For example,
>> nodes can keep addresses alive be periodically generating a NA for the address.
> 
> I would love to see an RA option with a byte in it that said how many slots
> per mac address the router supported.
> 
> A value of 0 would force temporary addresses off.
> 
> Probably "0" would imply that there were actually two slots available per MAC
> (LL and one ULA).
> 
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
> -= IPv6 IoT consulting =-
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