Using the latest firmware 0805, and the embedded NIC.
The WoL function worked fine for a few months.
Then for some reasons, it just stopped working. No change was done anywhere on the network.
And the BIOS option
Power ON by PCI-E
is still there.
The "magic" WoL packet goes through and reaches its destination
tcpdump -i eth0 'udp and port 9'
The router connected to Internet is (has always been) correctly configured, having the MAC / IP addresses of the PC set in
/etc/ethers
Is it a known bug for which a fix is expected in a next BIOS release?