Paul4256 wrote Hi. Thanks for the suggestions. I have tried this and initially thought it was working but after a few seconds I got 'no internet'. The main router is 192.168.1.255 The W9970 is...

@d553 If you have in your router DHCP server settings: Primary DNS:192.168.0.100 (pi-hole) Secondary DNS:192.168.0.1 (router) and for some reason a DNS request can't be resolved by the Primary DNS...

@cymru78 IPv6 is enabled by default. For configuring IPv6 refer your VR2800 user guide and the ISP. If you don't use IPv6 DSL line connection provided by your ISP then just disabled it.

@white_jasmine This is from C54 user guide: Check if you router's time is set correctly.

@rob-nicholson Make sure you are with the latest FW for the router. Any intermediate devices between your ISP and the WR940N ? Try changing the remote management port to something different: Then try...

@d553 There should be a reason for that for sure. Any FW updates on the router recently ? Do the problematic devices get their IP addresses by router's DHCP server or they are statically assigned ?...