Re: Thoughts on increasing MTUs on the internet

* Steven M. Bellovin:

A few years ago, the IETF was considering various jumbogram options. As best I recall, that was the official response from the relevant IEEE folks: "no". They're concerned with backward compatibility.

Gigabit ethernet has already broken backwards compatibility and is essentially point-to-point, so the old compatibility concerns no longer apply. Jumbo frame opt-in could even be controlled with a protocol above layer 2.