On Sat, Jul 27, 2019, at 15:45, Andrew Miskell wrote:
> What do the devices say their DNS server is? If it’s the .1 address 
> this would expected behavior because that’s the dnsmasq dns address. 
I cannot tell what the Roku streamers have assigned. The UI doesn't expose that 

In the previous configuration, with dnsmasq on and the gateway on 
.1, they DID properly go directly to the router on as directed by dhcp-option 
while everything else on the network went to .11 as expected. So either they 
defaulted to the gateway address for DNS or they accepted the assignment from 
DHCP. They do ask for option 6, I can see the DHCP request and response in the 
log. That much looks correct.

In this configuration, I've told them to use Google servers.

I don't know enough about how DNS works, but ... maybe they have accepted that 
assignment, but the first DNS server in the request chain is dnsmasq - and it 
answers rather than relays the request to Google's servers because dnsmasq 
"knows" the answer - its in the addn-hosts file.

Does that make sense?

Art Greenberg

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