[kwikbreaks]

From the little I remember reading about this from when I was miffed because I'd been using it and it stopped working with the SH the IP is indeed not important but the SH routing drops the packet if it doesn't recognise the MAC because it's been dropped from the ARP table.

If you have some local device powered up and accessible from the WAN then you only actually need it to work LAN side anyway because you can have that device send the magic packet. I only ever use it via Logmein and I have a 24x7 client so it may be logmein routes the wakeup via that although technically it shouldn't be doing that unless it asks for that machines access code and it doesn't do that.

I don't have the Superhub now (or at least I'm not using it) so I can't experiment. I do recall it working when I fiddled about with the port forwarding on the SH but can't swear that it worked a long time after the target had been powered down.