I think I understand what the existence of a DHCP lease means. And, indeed, the lease table lists all the devices in my house that are powered up and either connected to the ethernet LAN or connected to the WiFi. And the leases are being renewed each day All that seems normal. What I do not...
The DHCP lease list is correct, showing all the devices I know about. But the Network Map shows half of these as "offline". So I conclude that the router wants something else beyond an active lease to list a device as "online", but I cannot figure out what it is. My best theory is that this is...