Hi Harald,
I'm going to pick on one statement, which other have as well.
It is important that this is "For the Internet," and does not include
everything that happens to use IP. IP is being used in a myriad of
real-world applications, such as controlling street lights, but the
IETF does not standardize those applications.
I almost feel that this should just be dropped from the statement. My
reasons being that I have been told by the IESG about protocol extensibility
is that the IETF wants to have a tighter control over protocol
extensibility, even for extensions thought to be for limited use
or specific networks (for example, cellular networks). The reason
being is that once something is out there, it often starts to be used
in ways which were not originally planned or used outside of its
original 'limited use' plans. Therefore, in order to ensure proper
protocol behavior & interoperability, the IESG wants to manage
extensibility. This has been very true in SIP & Diameter, for example.
On the other hand, we see a protocol like RADIUS, which the IETF
has never done a good job at working with or standardizing, being
developed in 4 or more SDOs, and not in a colaborative manner. This
makes a big mess with the RADIUS spec, and RADIUS does seem like a
protocol that has a big effect on the Internet.
So, in summary, the IESG has shown not to follow the above paragraph,
sometimes even for good reasons. I can't think of a way in which
modify the paragraph to make it any better - because there will always
be examples of work that the IETF choses to standardize (or not)
which will violate that part of the mission. Perhaps moving the
'for the internet to the previous paragraph is what is needed.
This leaves open the very interesting and difficult questions of
how to measure quality, relevance, and timeliness. The IETF
has identified interoperability, security, scalability and
'for the Internet' as essential, but without attaching measurements
to those characteristics.
John