Order of external DNS servers on Router OS DNS Server

dns-serverdomain-name-systemmikrotikrouteros

We have DNS server on our Mikrotik (RouterOS 6.36).

[admin@xxx] /ip dns> print 
                servers: 10.0.10.3,8.8.8.8
        dynamic-servers: 
  allow-remote-requests: yes
    max-udp-packet-size: 4096
   query-server-timeout: 2s
    query-total-timeout: 10s
             cache-size: 10240KiB
          cache-max-ttl: 1w
             cache-used: 243KiB
[admin@xxx] /ip dns>

There is list of DNS servers where it should ask. I would expect that it asks first 10.0.10.3 if the record is not found than ask 8.8.8.8?

The problem is, that 10.0.10.3 is our internal DNS server with some local addresses. These are not available on 8.8.8.8

When I have both server listed the nslookup for the address fails. When I remove the google one (8.8.8.8) and leave only our internal it works.

Why is the order of the servers not respected on RouterOS ?

I tried to make the order 10.0.10.3,8.8.8.8 or 8.8.8.8, 10.0.10.3 , it doesn't matter.

Any ideas? Thanks

Best Answer

If you have internal names that need to be resolved, then you shouldn’t have any external DNS servers defined. Create a second internal DNS server for HA and list it along with the other internal server and list those two in your internal router config.

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