Re: Port numbers and IPv6(was: I-D ACTION:draft-klensin-iana-reg-policy-00.txt)

[Philip Guenther <guenther+ietfd at sendmail.com>]

Stephen Sprunk <stephen at sprunk.org> writes:
...
>It's already happening.  There is a large (and growing) number of corporate 
>networks where 802.1x is mandatory -- if you don't do it, you simply can't 
>connect.  I've also run into a fair number that require registering MAC 
>addresses (default is to deny or sandbox) due to vendors who don't yet do 
>802.1x.
>
>End-to-end is a great goal, but it doesn't reflect the real world today. 
>Not that it's an excuse to _require_ middleware in protocols, but we need to 
>design with the knowledge that they _may_ exist.

Maybe I'm just slow, but I fail to see the connection between those two
paragraphs.  How does authentication of network access serve as a
counter example to the end-to-end principle?  As far as I can tell,
they're completely orthogonal, just as e2e isn't refuted by the
existence of DHCP.  Or did I miss a discussion about how DHCP is a
middleware protocol?


Philip Guenther

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