Franck Martin writes:
The IETF ones...
not supporting ECN
But ECN has not always been a standard. If all RFCs had been
simultaneously written forty years ago, it would be reasonable to speak
of one organization or another not respecting standards because it did
not adhere to a given RFC. But in the real world, RFCs have been
written over time, and whether or not an entity is conformant cannot be
determined without a reference to time. Publishing a new standard does
not automatically make the entire planet non-conformant.
I suspect that ISOC's site is conformant up to a certain point, but not
beyond ... like most sites on the Internet. The wise developer allows
for the impossibility of instantaneous updates in the development and
implementation of new standards.