Re: Vehicle's VIN in IPv6.

Roland Bless <roland.bless@kit.edu> Thu, 31 March 2011 13:08 UTC

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Date: Thu, 31 Mar 2011 15:10:16 +0200
From: Roland Bless <roland.bless@kit.edu>
Organization: Institute of Telematics, Karlsruhe Institute of Technology (KIT)
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To: Scott Brim <scott.brim@gmail.com>
Subject: Re: Vehicle's VIN in IPv6.
References: <5C4A2B87ED124653A9BDEDAC14D6F2C8@sparrow> <4D944365.4020809@kit.edu> <4D944505.3060407@gmail.com> <7EF89C89-675C-446E-9B00-AE06820988B6@daork.net> <AANLkTikAA1WfeKgc8_L0Z-JYFGAUuGzvXyUQPZmvyJvD@mail.gmail.com>
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Cc: ipv6@ietf.org, Brian E Carpenter <brian.e.carpenter@gmail.com>, =?ISO-8859-1?Q?Radek_Wr=F3bel?= <radoslaw.wrobel@pwr.wroc.pl>
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Hi Scott,

On 31.03.2011 13:18, Scott Brim wrote:
>> Perhaps something a bit more relevant to IETF is generating a ULA prefix from a VIN?
> 
> If these addresses will never be used for anything except diagnostics
> and internal communications, then okay, but this looks like a classic
> case of a net that is going to start out with just local use, and soon
> move to needing global addresses.  Hey, I know, NAT.

We are currently designing a security architecture for cars
that use IPv6 for their internal communications. For this
internal communication, you may use this ULA-like prefix.
If external connectivity is required (which will be the case),
this may happen by dedicated ALGs or proxies, making sure
that the safety-critical internal communications is not
affected adversely. Filtering traffic would be easier
using something like ULAs. Direct, unauthorized access to the ECUs
is therefore unwanted and unlikely.

Regards,
 Roland