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How do I disable automatic IP address updating (when conflict is detected with ISP)?
I use a non-routing range on my LAN and use static IP addresses for certain hosts. The automatic change accompanied by: Important Update To avoid conflict with your Internet Service Provider,...
You may not like the automatic changing of IP addresses, but the behavior is a sign that your LAN and WAN subnets conflict with each other. I don't know how your other router was able to work correctly with such a conflict, but you should fix it. For example, if your ISP is using subnet 192.168.1.0/255.255.255.0, then set your LAN to use 192.168.2.0/255.255.255.0. Problem solved.
joelsantiago wrote:
I use a non-routing range on my LAN and use static IP addresses for certain hosts. The automatic change accompanied by:
Important Update
To avoid conflict with your Internet Service Provider, your router's IP address has been update to (another non-routing range).
... usually happens when my modem is reset or my ISP changes my IP address -- but is always completely unnecessary and completely messes things up for me.
Not sure I understand?
Can you explain your network configuration?
Modem --> Router ---+---> wired devices
!
+--- > wireless device
??????
If you set the Internet IP Address to Static, yes, if the ISP changes your IP WAN Address you can have problems.
Is you IP Service Static or not? If not then use the Automatic Setting.
"I use a non-routing range on my LAN and use static IP addresses for certain hosts. The automatic change accompanied by:" is the part I also don't understand? Quite normal to assign specific IP Addresses to specific devices on the LAN. However you should then make sure they are outside of the range that DHCP will assign IP Addresses, otherwise you'd have IP Address conflicts. On the ADVANCED -> LAN SETUP tab set the USE ROUTER AS DHCP SERVER starting or ending address to leave room for the assigned IP Address to avoid the conflict.
I get my Internet IP address dynamically from my ISP -- and that's how I've got it set on the router. Also using the router as the DHCP server and I'm not assigning anything in the DHCP pool to any of the static hosts. All that stuff works as intended.
The issue is when my modem gets reset (power cut, whatever) or I'm assigned a new WAN IP address by my ISP, the router detects a conflict and takes it upon itself to change its (the router's) IP address to one on a completely different range (from 192.168.1.1 to 10.0.0.1 for example). This tends to make a mess of things, is incredibly inconvenient and ultimately unnecessary.
I would just like to know how to turn this feature off.
Thanks.
I think the problem is your MODEM, not the router. Is the modem bridged? If it isn't, it is sending your router a PRIVATE IP Address, and at some point, it is the same as your router, hence the problem as the router detects the conflict and changes its IP Address.
It is possible the modem only will use one port as the one that is outputting the WAP IP address and other ports LAN IP Addresses?
Contact your ISP to verify, but most modems can be accessed with 192.168.100.1 with a userID and P/W that is usually printed on the label somewhere or use a default from the ISP.
My modem is bridged and always passes an IP Address that is NOT private. My WAN IP Address will change sporadically as I don't have a FIXED IP ADDRESS from my ISP but a random one. Usually only business accounts get fixed IP Addresses, but some ISP's could be different (Cable that is).
The modem never passes a private IP address. I've verified this with the ISP.
I've used several different routers with this network, this exact configuration and this same ISP (and modem) and have not had this issue before.
joelsantiago wrote:The modem never passes a private IP address. I've verified this with the ISP.
I've used several different routers with this network, this exact configuration and this same ISP (and modem) and have not had this issue before.
Well, it seems it might be? That is why you are getting the warning message. Some Modems do issue TEMPORARY IP's in the private range when they first come up and had not connected to the ISP fully. This would explain what you are seeing possibly? That is they sort of act like a switch when first powering up and then switch to 'router' mode sending out the WAP IP Address.
Here is a report of a similar problem fixed with an upgrade to the firmware, https://www.experts-exchange.com/questions/27920736/Netgear-router-keeps-changing-LAN-ip-address.html
Might want to google your modem model and see if it does issue temp IP's?
I'm out of ideas here.