DNS does not cache in 5.24

bronco1980 · Sat Apr 20, 2013 10:30 pm

Hey Guys..

i have upgrade to 5.24 but the dns server in ip/dns/cache does not cache any content!!

Waiting for your reply..
Thx guys

cbrown · Sun Apr 21, 2013 7:37 am

It was working fine for me.

Ae you sure you have it setup correctly?

bronco1980 · Sun Apr 21, 2013 10:04 am

Yes ..

ip/dns/ servers,, and i have put the server addresses, and in ppp/profiles i have put there also Ip of the Dns.

Let me know pls if there is something missing!!

Thx.

TheWiFiGuy · Sun Apr 21, 2013 11:00 pm

Have you told it to accept remote connections?

DNS Cache works fine in 5.24 - maybe you can post your setup config ?

bronco1980 · Mon Apr 22, 2013 12:09 am

Thx for the reply..

here is my settings:

[admin@Swift] /ip dns> print
servers: 10.249.209.101,10.249.209.102
dynamic-servers:
allow-remote-requests: yes
max-udp-packet-size: 8192
cache-size: 8192KiB
cache-max-ttl: 1w
cache-used: 12KiB

STILL DNS CACHE IS EMPTY!

CelticComms · Mon Apr 22, 2013 12:47 am

Are you sure that clients are using the routerboard as their DNS Server? The cache will only show entries if either the router itself successfully requests a lookup.

bronco1980 · Mon Apr 22, 2013 2:00 am

I'm using the Dns giving by my isp!

Can u help on how to do this.. all my clients are pppoe clients

CelticComms · Mon Apr 22, 2013 3:56 am

I suggest that you upload output from /export compact so we can get a better idea what the config is. You can specify the DNS server in the PPPoE profile for the clients. At the moment I suspect that your clients are using the ISP DNS servers or other servers directly thus you don't have any requests hitting the RouterOS DNS server.

cbrown · Mon Apr 22, 2013 2:17 pm

I agree with Celtic, it would be best to post /export compact

You can force all DNS traffic to be redirected to the router using NAT.

/ip firewall nat
add action=redirect chain=dstnat dst-port=53 protocol=udp to-ports=53
add action=redirect chain=dstnat dst-port=53 protocol=tcp to-ports=53

bronco1980 · Mon Apr 22, 2013 10:50 pm

Thx guys a lot...
I have solved it.. the problem was with local address in pppoe clients, it was blank before, once i added it with the dns address in ppp/profiles caching start to cache...

Thx again for your time