[e2e] TCP out of order

[Michael Welzl]

> Note that you can get very consistent packet reordering even if the
> speed-of-light delay difference is zero and the circuit bandwidths
> are identical, if the packets being generated are sometimes different
> sizes.  That is, if you send a big packet followed by a small packet, the
> small packet will always catch up to and pass the big packet if they
> traverse enough store-and-forward hops.

Forgive my ignorance - but: why?

Michael