IETF meetings also have a very diverse audience involving corporate, government, academic and public participation. They just don't call it "multistakeholder" because the model isn't heavily silo'd or bureaucratic; a triumph of meritocracy over money or politics (usually).

Beyond pure technical expertise, ICANN has much to learn from IETF's approach to governance -- especially with regards to public participation -- on Internet matters including but well beyond just identifiers. And it does all this with an annual budget one-eleventh that of ICANN's, so it is not financially dependent on the technologies it defines or maintains.

Plus ... there is much to recommend in decision-making by humming.

- Evan