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Forum Discussion
NetGear Router | WAN / LAN IP Conflict issue
I recently had an issue on my XR1000 where I was not able to apply IP address reservation in the LAN setup page, due to the router reporting back that the LAN IP range is in conflict with the WAN IP....
The Settings pages are NTGR software, not something we've touched ever so it wouldn't be something we could change. I don't believe using internal DNS has worked in the past, I could be wrong. Don't know the setup but if it's a device upstream of the XR it may not work, it may need an IP from the XR to work instead, again, I don't recall using internal DNS working though.
Using internal DNS server IP does work, it's just that I noticed this "WAN / LAN IP conflict" message issue if you happen to be using a LAN IP for DNS requests (i.e. a pi-hole), and then you want to apply configuration settings in the LAN setup page, then it gives the message and won't apply the new config. I have noticed a few individuals mentioning this same issue, albeit probably not a very common one since most people just either use ISP assigned or choose cloudflare or google.
So this works for me on my XR500 that i already had out on my desk.
Setting Default IP address range .100 to .150:
I just entered in some IP addresses outside of the new default IP address range and hit apply and didn't get any conflict messages:
Those IPs I tried didn't have any connection, just wanted to see if an LAN side IP address would work and it did. I presume this should work on the XR1000 as well since should be same base code.
I have my pi-hole set as a DNS server in the internet setup page.
In my LAN setup, I have DHCP range set to go up to .100, so this range should not include the pi-hole DNS which is on host address .253. When I try to apply reservation settings though, this conflict message still shows and will not apply the settings.
(Those populated hosts you see in the reservation table, I was only able to apply those by using Cloudflare DNS IP's in the internet setup page previously.)
The pi-hole is set to manual IP outside DHCP range and does not received DHCP instruction from the router, but for some reason when I click on "add" button (add hosts to reservation), the .253 IP is showing there in the table with the manual IP that is outside the DHCP range. This shouldn't be showing in this "hosts to add" reserve table, because DHCP won't give out this IP to any host.
Not sure if its conflicting on the .253 IP showing in host reservation "add" list for some reason, or if it is simply the subnet mask of the LAN in general (as per the error message).
With your settings however, as you mentioned there are no actual hosts behind those IPs set in your DNS server IPs, so those IPs would not list in the "add hosts" page of address reservation (even though they should not, since outside DHCP range), which seems to be a problem I have on my XR1000.
Does .101 have same issue if you try this IP address for the pI-Hole?
So the Default DHCP IP address range is .2 to .100?
You don't need to set any IP address reservation for static IP addressed devices that are OUTSIDE of the default DHCP IP address range. This is normal and standard networking practice.
