Asuswrt-Merlin 378.54_2 local DNS not working?

[Tobias McNulty]

I finally upgraded from the 376.49 series yesterday to 378.54_2. Everything seems to be working great except for local DNS (and yes I did a factory reset after the upgrade).

$ host foo.mydomain.lan
Host foo.mydomain.lan not found: 3(NXDOMAIN)

Where "foo" is the hostname I gave to the DHCP client for my laptop and mydomain.lan is the domain name configured for the DHCP server. This used to work without a hitch, though I seem to remember some oddness with requiring the host to have obtained a DHCP lease before DNS would be served (I've confirmed that it has in fact obtained a lease). Simply using "host foo" gives the same result.

Any idea what might be causing this?

Thanks,
Toby

 

[RMerlin]

Check what nameserver your client is using, also make sure you do configure your local lan domain on the router's DHCP page.

 

[Tobias McNulty]

Thanks for the quick reply. Both of those are set - I have "RT-AC66U's Domain Name" set to "mydomain.lan" and I verified that my name server shows up in /etc/resolv.conf in the client. I also tried querying the router directly (e.g., `host foo 192.168.1.1` where 192.168.1.1 is the address of the router) and get the same response:

$ host foo 192.168.1.1


Using domain server:

Name: 192.168.1.1

Address: 192.168.1.1#53

Aliases:


Host foo not found: 3(NXDOMAIN)

 

[Tobias McNulty]

FWIW, this does work when logged in to the router as 'admin' via SSH:

# nslookup foo.mydomain.lan

Server: 127.0.0.1

Address 1: 127.0.0.1 localhost.localdomain


Name: foo.mydomain.lan

Address 1: 192.168.1.80 foo.mydomain.lan

 

[RMerlin]

Are you using DNSFilter? This is not compatible with local LAN resolution.

 

[Tobias McNulty]

Yes! That was it. Many thanks. I had DNSFilter turned on to use OpenDNS Home.

I believe I can accomplish the same thing just by setting OpenDNS's servers in the WAN DNS settings.

Thanks again.

Toby