@GaganS The M9 has DNS IP settings in the DHCP settings menu as well as the WAN settings - sorry I don't know about the x60

Ok, I'm going to try changing the dns setting for just the DHCP server and see if that helps - that keeps inline with what Tony is saying, although I still don't fully understand how it works for a...

@Tony aaaah, ok - I've had another read and look at the setup and yes, the WAN does reference the IP of the pihole on the LAN - looking at the deco settings I think I should change the DHCP DNS...

@GaganS no, I've turned the pihole off and it's been ok but I also haven't had any software updates to the deco either... I still don't understand why the pihole would interfere with the deco :(

@Tony There is a pihole involved, but it's assigned an IP by the Deco and it's in the correct LAN IP range, however the secondary DNS address in the WAN settings is a public DNS server for when the...

@Tony thanks for the reply - I don't understand why it has changed the whole network to use different addresses from 192.168.0.x to 192.168.4.x - I could understand it changing a single IP if there...