Jon,

It is the same code as above, I only modified the MAC address and the broadcast address. I have a Linksys AP and enabled single port forwarding for both UDP/TCP (port 7) to the IP address required. DHCP reservation is also enabled for the same IP address. According to my info this should be enough to allow for WOL, or do i miss something ?

Found it; I misunderstood (and changed) the 224.0.0.1 address, which I shouldn't have done, is woring like a charm (also with sending much less than 40 packets)

Many thanks to thanks to Sogliphy !