Wake on lan works at most 1 time

[Tuatini]

Yeah it must be that but I cannot figure out what it is. Tho I believe Wol doesn't work if you don't shutdown your computer properly (if you cut the AC power for example). Are you still able to wake your computer up with Wol after a current loss? (or simply by turning off then on your computer power supply).

 

[GSpock]

I experienced some power outage in the past, and did not get any issue with WOL/WOW .... (I also remember that I had to put my arp commands in a cron because I noticed that some GUI action was flushing the arp table ...).
Besides that, regarding your comment on 192.168.1.255, I think you are right, but it means that if you have more than 1 device to wake, sending the magic paket will wake all of them (not necessary what you want).
I also remember that as of windows 8, they introduced a new power management parameter at the PC level: something like "authorise hybrid sleep mode" (autorisé la veille hybride) and this had to be dsiabled on my system in order to have wol work .....

 

[Tuatini]

Ok... Well I already lost a lot of time trying to figure out what the misconfiguration could be . AC back will do. Merci beaucoup pour ton aide en tout cas