I'm totally confused by what's happening to my wifi router, so seeking help here.
I have a modem/wifi router (Netgear CG3000D—let's call it main) connected to cable and configured with 255.255.255.0 mask. The LAN works fine, I'm getting 192.168.0.xxx IP addresses.
Connected to the router via CAT5 there is another wifi-router, used as a switch and broadcasting another wifi network—255.255.255.0 IP addresses are seen on its LAN ports as well as on the Wi-Fi connections.
On the wifi from the main router I also used to have 192.168.0.xxx IPs via DHCP and everything was working perfectly.
But all of a sudden at some point my main router decided to switch wifi connections to 255.255.0.0 mask. So now devices connected to this network get IPs of 169.254.x.x and cannot communicate to other devices on the network.
I am totally puzzled by why this happened and also where exactly these settings are. Nothing on the main router seem to be setting this. And I don't think the second switch should be affecting this, but mentioned it to give a fuller picture.
Any ideas where to look at?