[plug] Wake-on-Lan

[Bernd Felsche]

On Thursday 09 September 2004 08:49, James Devenish wrote:
> In message <20040909003629.GA24285 at mail.guild.uwa.edu.au>
>
> on Thu, Sep 09, 2004 at 08:36:30AM +0800, James Devenish wrote:
> > If we assume that the unicast, multicast and
> > broadcast types are all referring to IPv4, then unicast should probably
> > be very unreliable. On an Ethernet network, if the computer has been
> > sleeping long enough, it will become unreachable except by Ethernet
> > broadcast frames. Therefore, any attempts to do unicast waking will
> > fail when the sender is unable to find the relevant neighbour by ARP.
>
> By the way:
>
> (a) This was just me guessing and speculating.
> (b) I should also have said "in a typical environment", since
>     some people might simply use static addressing tables that
>     could make these things work.

If you're running a DHCP server, then you may well have MAC to IP
address mapping at that server for "significicant" hosts.

Not sure if that'll help!