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DNS question

chrissyyy

ULTIMATE Member
I have a Virgin media Gig1 connection (SuperHub 5) running in modem mode, connected to a Flint 2 router.

On the WAN side of the Flint 2, I can see the DHCP settings, the VM public IP, the VM gateway address and the two VM DNS servers assigned from the Super Hub.

I don't particularly like using VM's DNS so I change them to Cloudflare and Google.

What does that achieve though on the WAN side if I have to set it again under DNS in the LAN side?
 
In a typical Soho network config whatever is received from the upstream network for DNS (and maybe other things like NTP) is shared with the LAN and usually made available by DHCP to clients on the LAN.

By making a manual change to DNS to your preferred DNS resolvers on the LAN side you have achieved what you probably need.

Making the change to the WAN DNS usually has limited effect, although you need to know how the router handles DNS queries for anything it needs to resolve for its own purposes, and whether it uses LAN or WAN for those queries. So it might impact the routers own queries but it depends on the internals of the router and which interface it uses for its own purposes.
 
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