This was my set up previously:
ATT Router+Modem (Model: BGW320-505). This ATT device doesn't allow turning off DHCP :
|Device IPv4 Address||192.168.2.254|
|DHCPv4 Start Address||192.168.2.64|
|DHCPv4 End Address||192.168.2.253|
ATT router+modem is in IP Passthrough mode.
Deco M9 Plus internal IP Range: 192.168.1.1-254
Deco M9 also has a DHCP server active
Deco M9 is getting public IP assigned directly to it. So the passthrough is working properly
I had a rPi with PiHole acting as the DNS server. IP of PiHole was 192.168.1.xx
Everything was working perfectly, until yesterday night PiHole stopped working.
I set the Deco to get DNS automatically. It picked up 192.168.2.254 (this is the IP of the ATT Modem+Router) as the DNS Server.
Then the Decos switched their IP range to 192.168.4.1-254. This breaks up all my IoT settings.
When I try to give 192.168.1.1 as the LAN IP in the Deco, I get the error "LAN IP address and DNS server address (192.168.2.254) cannot be in the same subnet"
How do I get the Deco to switch back to 192.168.1.xx range?
P.S. I previously had the same issue and switching the IP range of the ATT Modem+Router from 192.168.1.xx to 192.168.2.xx allowed me to get the Decos to go to the 192.168.1.xx range. Now it is not working in the same setting.
Thanks in advance.