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Re: RFC4941 text on requirement for public addresses

Brian E Carpenter <brian.e.carpenter@gmail.com> Wed, 18 May 2016 23:31 UTC

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Subject: Re: RFC4941 text on requirement for public addresses
To: Tim Chown <Tim.Chown@jisc.ac.uk>, Alexandre Petrescu <alexandre.petrescu@gmail.com>
References: <573B5FAC.7060300@gont.com.ar> <FBFC5456-E42D-4E52-BBE2-0ADC898516B0@employees.org> <3BDDD246-C889-4AB5-9C21-62E4BF284192@jisc.ac.uk> <d17cdbc3-0cc3-800c-a08d-dc3cd2895a1c@gmail.com> <AE7E6DF8-9281-49BC-A010-09E93B754EDC@jisc.ac.uk>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <5f9f0c91-1087-21d7-8b9a-a9d38a7bd1af@gmail.com>
Date: Thu, 19 May 2016 11:31:23 +1200
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On 19/05/2016 02:23, Tim Chown wrote:
>> On 18 May 2016, at 15:15, Alexandre Petrescu <alexandre.petrescu@gmail.com> wrote:

...
>> If there's no fixed address then there's no DNS name for that machine.
>>
>> Updating DNS for each temporary IP address may not be that easy.
> 
> But that’s not necessarily needed. Was certainly fine without it in the campus environment I was in, where all comms initiated outbound were from privacy addresses with no associated DNS info.

I just experimented at home, with privacy addressing enabled and my SLAAC-assigned address
deleted manually(*). As far as I can see everything works as normal so far. Why wouldn't
it? DNS names are pointless for pure clients, for IPv-anything.

* netsh interface ipv6 del address 12 <address> active
I can't find a way in Windows to simply switch SLAAC off without
defining a static address.

   Brian

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