Re: UDP packet fragments sent in reverse order

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 4 Dec 1998 02:27:04 +0000 (GMT)


> Can anyone tell me why the fragments would get sent out in reverse
> order? I can't see any reason to do it and it certainly doesn't
> seem like a good idea.

Its a performance improvement (except with your weird firewall). We
send the other fragments out as we compute the checksum which we stuff
in the header packet. Otherwise we'd have to delay sending the fragments
until the checksum pass was completed

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