> > On Dec 3, 2021, at 8:38 PM, Dino Farinacci <farina...@gmail.com> wrote: > > >> My point, which appears not to be tracking, is I *wish* protocol layers >> didn’t have such strict MTUs, but rather expanded as headers were added *at >> all layers*, in the same *spirit* as Ethernet does. > > The Internet can do this. Just make the MTU 1400. Then you can add up to 100 > bytes of header.
That may help, but only in limited cases. E.g., let’s say you run IPsec tunnel mode for IPv6, which eats the majority of that space. Now that traffic runs over a second IPsec tunnel that you don’t know about. That’s the problem - and why MTU (i.e., having a max in the first place) is itself the problem. Joe _______________________________________________ Int-area mailing list Int-area@ietf.org https://www.ietf.org/mailman/listinfo/int-area
