Re: RS sending in draft-ietf-v6ops-ipv6-cpe-router-04

[Fred Baker <fred@cisco.com>]

On Apr 15, 2010, at 9:38 AM, Philip Homburg wrote:

> In your letter dated Thu, 15 Apr 2010 17:26:48 +0200 you wrote:
>>> Does that mean that if you use your neighbor's mac address, you will get
>>> your neighbors prefix?
>> 
>> Well, I meant "MUST use of its WAN interface *IPv6* unicast addresses...
> 
> Yes, but on an ethernet, a link local address is often derived from the
> mac address.

unless you happen to be using the operating system that sits on 90%+ of desktops: http://ipv6int.net/systems/windows_vista-ipv6.html#privacy is an example of several sites I have found commenting on Windows XP, Vita, and Windows 7. It uses privacy addresses, which are random numbers.

>>> draft-krishnan-6man-rs-mark-03 talks about a LIO option. Which should be
>>> enough to identify the customer.
>> 
>> The LIO is one key, however the LL and unicast IP addresses of a CE need to
>> be correlated to that key, hence they are essential pieces of info.
> 
> Why would the edge router even look at the source address if there is a 
> LIO? 
> 
> The source address is typically under control of the customer, and cannot be
> trusted.
> 
> 
> 

http://www.ipinc.net/IPv4.GIF