Lost in DNS, unbound, DHCP configurations: Two IPs for a single host

Thanks for you reply @bonnietwin

“Deny known clients” does not solve my problem.
I still have two IPs in my DNS when I disconnect wifi to connect Ethernet

I don’t understand what the command means

	set ClientName = concat(
		"NAME=",
		pick-first-value(option host-name, config-option-host-name, client-name, "")
	);

in dhcp.conf

What are arguments for “config-option-host-name” ? “client-name” ?

Shouldn’t we use the host value defined in /var/ipfire/main/hosts ?

I solved my “Logitech Flow” problem by assigning a different hostname

  • “huaweimb” for ethernet
  • “huaweimbwifi” for wifi

And Windows computer name “matebook”

I still have both addresses for “matebook” in IPFire DNS