Please follow the below template, it will help us to help you!
Expected Behaviour:
I recognize all IP addresses listed under Network overview
Actual Behaviour:
According to the Pi-Hole Network overview, there's one IP address that never uses Pi-Hole for DNS. All other IP addresses match my network domain 10.10.#.# but this one is 169.254.#.# and the hardware address matches my printer. My printer is also listed under it's correct static IP address. So any idea how it has a second IP address and why it's not using Pi-Hole?
Debug Token:
[Replace this text with the debug token provided from running pihole -d (or running the debug script through the web interface]
That is an IPv4 link-local address, easily recognizable by fitting the 169.254.0.0/16 address range.
A device commonly assigns itself such a link-local IPv4 address if it failed to discover other means of joining a network, i.e. static configuration as well as DHCP lease acquisition have failed for it.
It is to be expected that such a device wouldn't use Pi-hole, as it would have no knowledge of neither DNS servers nor gateway nor any other part of your network. It could only communicate with its direct neighbours on the same link in the same IP address range.
Likely, your printer didn't succeed in joining your network at first, until you somehow assigned it the 10.10.x.x IP address it is currently using.
Thanks! Was not aware of link-local addresses. I found an APIPA option in the printer settings and disabled it, so would expect to see it drop off pihole's list.