Andres,

Yes your understanding of my script is correct and your example is spot
on.

Explained another way, there are three computers involved in the
process.  There is the requester who is ARPing for the sleeping machine,
there is the sleeping machine, which will not wake to ARP requests, and
there is the sniffer, which is a third machine on the network that is
awake and listening for ARP traffic on behalf sleeper and will send the
magic packet (which will wake the sleeper) when it promiscuously hears
the ARP request go out from the requester.

-Jim

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https://bugs.launchpad.net/bugs/737479

Title:
  powerwake enhancement, monitor ARP requests for sleeping machines and
  send magic packets

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