[Dnsmasq-discuss] RESOLVED: dnsmaq on OpenWRT, configuration question

[Geert Stappers]

On Sun, Jul 28, 2019 at 02:36:29PM -0400, Art Greenberg wrote:
> DNS from the Roku streamers is working as it should.
> 
> I am not sure idea why.
> 
> I learned a little about tcpdump and ran it on the router while using
> nslookup and dig on a Linux machine to learn how to use tcpdump and
> to see what "normal" traffic looked like.
> 
> In my dnsmasq.conf, I took the "net:red" tags off of the dhcp-host
> assignments for the Rokus, and waited for DHCP lease renewals. Then
> I used tcpdump on the router to observe incoming DNS requests and saw
> that they were addressing the router.
> 
> Then I put the "net:red" tags back on the dhcp-host assignments,
> and again waited for DHCP lease renewals. Again using tcpdump on the
> router to observe incoming DNS requests I saw the Rokus were indeed
> talking to the assigned DNS server at 1.1.1.1, and lo and behold the
> apps that were previously not working due to failing to access their
> advertising servers are now working.
> 
> I'm preplexed. I am sure I've changed nothing else, but in all of the
> thrashing around to figure out what is happening I must have touched
> something that mattered.
> 
> Thank you to all who offered advice. I know more about networking and
> my new router now thanks to your input, and that's a definite positive.

 :-)

and thanks for reporting that it is solved.


Groeten
Geert Stappers
-- 
Leven en laten leven