Hi,

I'm not sure this idea makes sense.

Where would someone obtain a list of IPv6 addresses that they wish to
send Wake-on-LAN packets to?  And if preparing such a list, would it not
be possible to compile an accurate list of MAC addresses at the time
(using broadcast pings, ICMPv6 neighbour discovery and/or ipv6calc)?


In many cases, a link-local (FE80:://64) IPv6 address can be mapped to
the interface's MAC address, but a notable exception would be Windows
boxes since Vista by default -- they randomise this:

* http://technet.microsoft.com/en-us/magazine/2007.08.cableguy.aspx

A properly-generated link-local address based on the interface MAC
should end with 'xxxx:xxFF:FExx:xxxx', whereas the random ones generated
by Windows probably won't.


Globally-routed IPv6 addresses are even less likely to map to a real MAC
address.  Hosts using IPv6 Privacy Extensions may periodically randomise
these on their outgoing traffic.  And globally-routed or site-local
addresses may have been statically assigned, or leased from a pool via
DHCPv6.

So it would seem this feature would rarely work.

Regards,
-- 
Steven Chamberlain
ste...@pyro.eu.org



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