Hello,
	I was assigned to do an OPS-DIR review for draft-masotta-tftpexts-windowsize-opt-11. I apologize for being (very) late with this review.

	Having read through the review, I had some initial concerns, and went back to the email and read through the IESG discussion. In particular, while I wish the author had chosen to adopt Katheen's comments re the Security Considerations sections, I find myself stuck editorially on the first sentence of the Introduction section. "TFTP is virtually unused for internet transfers today, TFTP is still massively used in network boot/installation scenarios including EFI (Extensible Firmware Interface)." This run on sentence required me to read the sentence out loud and I'm still not sure it makes sense. The third sentence, "this way the original limitation of 512 byte blocks are in practice replaced in Ethernet environments ..." also has a dangling preposition. Considering the amount of discussion this draft has raised, I find myself, as a newcomer to the conversation, wanting a bit more discussion in the introduction about the problem being solved, rather than an assumption that I'm a TFTP expert already. This, however, is a minor nit.

	Overall, my main concerns have been addressed in the discussion; I believe the draft is fine and good to go.

Thanks
Sarah