DNS servers are one of the settings delivered automatically by DHCP, so if you have it set on the TC and the TC is also your DHCP server the other devices should inherit those settings.I have DNS set on my TC (both primary and secondary), but do I need to do that on the ATV also, or just set DNS for the same as my router? (10.0.1.1). Also, you can only set DNS on the ATV if you set up manually.
This is also why you need to set up manually if you want to use DNS settings other than what the DHCP server wants to provide.
The bad news is that 10.0.1.1 is a private IP which implies that your router may be providing cached DNS, most of the time that would be great, but in this case it could potentially be part of the problem.
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