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Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios

Gert Doering <gert@space.net> Wed, 20 February 2019 11:36 UTC

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Date: Wed, 20 Feb 2019 12:36:03 +0100
From: Gert Doering <gert@space.net>
To: JORDI PALET MARTINEZ <jordi.palet@consulintel.es>
Cc: Gert Doering <gert@space.net>, Nick Hilliard <nick@foobar.org>, Fernando Gont <fgont@si6networks.com>, IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>
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Subject: Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios
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Hi,

On Wed, Feb 20, 2019 at 08:24:51PM +0900, JORDI PALET MARTINEZ wrote:
> What a sacrilege!

There's so much wrong with current IPv6 standards and implementations
and processes that "just go with NPT" would save a lot of pain.

I'm no longer holding by breath for *useful* SoHo implementations
(like, full homenet multi-router / multi-homing support, with proper
firewalling, etc.) or useful client application behaviour.


> Ok, so let's go for IPv6 PI for every household, business, etc. ...

The PI part was more about "guaranteed uniqueness", which is important
for enterprise interconnections.  ULA-C would have nicely solved this
as well, but since we do not have it, ULA-L for "I have nothing in my
home which someone wants to reach over VPN" and PI for "VPN access
should be possible without address collisions".

OTOH, many large-enterprise VPNs use NAT today to work around the
duplicate-address problem, so whatever.  Just add NAT there.


(Quoting in the same style as everyone else does in this conversation
would be just so slightly more polite than blowing out two one-line-
full-quote mails in a properly quoted discussions.  Just sayin)

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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