netdev - Re: [RFC PATCH 00/18] netfilter: IPv6 NAT

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Date:	Wed, 30 Nov 2011 11:07:17 +0100 (CET)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Krzysztof Olędzki <ole@....pl>
cc:	Ulrich Weber <ulrich.weber@...hos.com>,
	Amos Jeffries <squid3@...enet.co.nz>,
	"sclark46@...thlink.net" <sclark46@...thlink.net>,
	"kaber@...sh.net" <kaber@...sh.net>,
	"netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [RFC PATCH 00/18] netfilter: IPv6 NAT


On Wednesday 2011-11-30 01:21, Krzysztof Olędzki wrote:
>>>
>>>>>However with NAT you could get some kind of anonymity.
>>>
>>>But without NAT you have pretty big chance to have the same IPv6 
>>>*suffix* everywhere, based on you MAC address. without NAT you have 
>>>pretty big chance to have the same IPv6 *suffix* everywhere, based on 
>>>you MAC address.
>>
>>Same suffix? Certainly not with [PrivExt...]
>
>What if:
>
>1. You or your users don't have modern OS on your device so there is no 
>DHCPv6 or rfc3041/4941 support?

Dedicated separate program (that's what you would probably do on
Windows XP which lacks DHCPv6, PrivExt and also does not even allow
manually setting an address via GUI).

>3. You need to have static addresses in your network for access control?

Access control can be done based on MAC within a broadcast domain so
you don't have to eschew Privacy Extensions if you can do so.
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