For a couple of days, my router (ZyXEL ZyWALL USG 20W) handles wrong IP addresses to several LAN devices. Where all my devices formerly got addresses in 192.168.1.*, they now get 192.168.2.* upon connection.
This happens even if their MAC address is bound in the router to a static IP of the form 192.168.1.*.
Only one Ethernet port of the router is physically connected, P2. The port's role is lan1 (LAN1):
and the adress for it is 192.168.1.1 (it's also the address I use to login on the router):
I have the units' MAC addresses bound to static IP addresses outside the range reserved for the DHCP server.
It looks as if some other unit on the network was running its own DHCP and giving away 192.168.2.* addresses. Is there a way to check who handle a unit its IP?
Any other suggestion as to why I suddenly get 192.168.2.*?