Sorry for the brain-fart yesterday ...I was distracted by my network where the Swisscom-box is just a modem-with-NAT. I forgot that your Swisscom box is the network router, DHCP-server, etc . Your original concern was, in essence, arp-table entry time-out defeating your WoL attempt. My world is different, so what follows is speculation: The dynamic entries in the arp-table (those generated by arp requests as the network goes about its business) DO time out-after some implementation-defined interval (for example, Cisco seems to use 14,400sec). Manually assigning an IP-address to a device leaves it to be discovered by arp requests ...a dynamic arp-table entry ...that will time out. A sleeping WoL-enabled NAS has a MAC-address "visible" to the network (else could not receive the WoL frame). [why is this "frame" called a "magic packet"???] There may be different "phases" to dynamic arp-table entry time-out as the MAC:IP entry goes from fresh-meat to not-used-recently to timed-out, maybe with a short-circuit to don't-work somewhere in the mix. This is probably not relevant to our discussion. Static arp-table entries do NOT time-out, but DO get cleared on reboot. e.g. the arp-table entry generated by: sudo arp -s 192.168.69.70 1f:2e:3d:4c:5b:6a does not time-out, but is cleared at reboot. ??? is this TRUE ??? Wild-guess: reserving an IP in the DHCP-server does an arp -s equivalent under the hood, so DHCP-reservations do not time-out in the arp-table. ??? is this TRUE ??? sudo arp -f /some/file Can be set-up to reinstate static arp-table entries from a file ...and run automatically as the device powers up ...surviving a reboot. I've seen implementations for a few Linux-species ...some are not pretty. ...if the above is even close to true, it prompts an interesting question: If the static arp-table entry disappears, it should only happen on reboot. But reboot of what? Swisscom-box "owns" the arp-table and the DHCP reservations so should reinstate static arp-table entries at startup using an arp -f equivalent. So it should all "just work". But chez vous it doesn't! !!!DESUFNOC YLSUOIRES Chris
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