Installed the 3-pack Orbi system yesterday, updated to current firmware (1.4.0.34), reset, then configured and put into use. Overall has worked pretty well but I'm hitting one issue that's becoming a show stopper
My upstream provider is a cable company, so I have a cable modem in front of the Orbi. The DNS supplied by my cable company is broken in various ways (very slow, returns incorrect cached answers, doesn't return NXDOMAIN when a domain doesn't exist, etc) so I normally configure whatever router I have behind the cable modem do DHCP to pull IP address but then configure my own DNS servers
When I configure the Orbi to do this (Advanced settings: IPv6: Use These DNS Servers for IPv6; Setup: Internet Setup: Use These DNS servers for IPv4), and then configure the Orbi to do DHCP for my devices behind it, it does not work correctly. What I see is that they use the Orbi as their DNS (expected) but that the Orbi is relaying DNS to my cable company's broken DNS (what the cable modem got from DHCP) and not to the DNS servers I supplied in the settings (NOT expected)
Is this a known issue? Are there any workarounds or something I'm missing about how to configure this?
