Random LAN IP change
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I've got a C1200 v3 that frequently changes the LAN address from 192.168.0.1 to 192.168.1.1 which interferes with access to my NAS and other network devices until I change it back.
It happens about once a month and is really frustrating. There's NOTHING on the LAN that has the address 192.168.0.1, the WAN has a public IP address too, so it's not like it's getting that when it's rebooting.
Is there a way to just disable that feature and let my internet die if for whatever reason my WAN has 192.168.0.1 for a few minutes?
Thanks!
So far this is my understanding for your network infrastructure:
1. You have only C1200 as a router in your local network (there's no any ISP modem/router provided device).
2. You are receiving your public IP address on your C1200 WAN port.
3. Your C1200 LAN is in 192.168.0.0/24.
4. Occasionally you're receiving on C1200 WAN port an IP address in 192.168.0.0/24 (instead of your public IP address) and its LAN IP address changes to 192.168.1.0/24 (as well as its DHCP pool range to 192.168.1.0/24).
If my understanding is correct so far, you should reach your ISP to be advised on that and to check your C1200 WAN connection.
There's a safety mechanism in C1200 that changes its LAN IP to 192.168.1.0/24 automatically, because it can't stay in the same subnet as its WAN port (when its WAN port is in 192.168.0.0/24).
For example if your WAN connection type is PPPoE test these settings to see if that makes any difference:
