From: Gregg N 

"Geo"  wrote in news:428f2eea{at}w3.nls.net:

> doesn't ethernet have acks when sending to a gateway?

No.

>> IP fragmentation does not require a response. The sender just splits
>> the packet up into multiple ethernet frames with a fragmentation flag
>> and offset
>> set in each fragment. The recipient reassembles the fragments. If a
>> fragment gets corrupted or lost in transit, the sender is none the
>> wiser.
>
> There is a do not fragment setting via that flag, who is that do not
> fragment setting supposed to instruct if not the routers? Is it just
> for a different network layer before the packet leaves the machine?

The "don't fragment' flag requests that the next hop not fragment it
when it sends it on. It's for the same IP layer. I don't see how your
question is relevant to what you quoted about fragmentation not requiring a
response.

Gregg

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