> Wouldn’t a smart tv do something ... smarter than just using the default dns given to it by the network?
It could certainly try... but usually you would block that in your firewall. Fixed DNS servers or fixed server IP addresses are tricky because if you ever need to change them, you can't, because you'd need to update the hardware (which you can't since it sits behind a firewall).
It could try to use things like Google's DNS server, but that is easily blocked in your router.
Not a lot that could be done except trusting your (internal) DNS server...
It could certainly try... but usually you would block that in your firewall. Fixed DNS servers or fixed server IP addresses are tricky because if you ever need to change them, you can't, because you'd need to update the hardware (which you can't since it sits behind a firewall).
It could try to use things like Google's DNS server, but that is easily blocked in your router.
Not a lot that could be done except trusting your (internal) DNS server...