Hello,
I've a strange problem with the Mikrotik DNS server of my CCR 1009. The setup is pretty classic :
[admin@MikroTik] > /ip dns print
servers: 80.67.169.12,8.8.8.8
dynamic-servers:
allow-remote-requests: yes
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 4s
max-concurrent-queries: 300
max-concurrent-tcp-sessions: 80
cache-size: 4096KiB
cache-max-ttl: 2d
cache-used: 63KiB
So, all my pc are using the Mikrotik ip address as DNS server, and it's working fine. For a while. Then, all of the sudden, it's not working anymore. The DNS doesn't resole anything, and, if I try a nslookup from one of my windows machine, it's timing out, like the DNS "service" of the mikrotik is crashed. So, 2 "solutions". Either I reboot the router, or I modify something in the config, press apply, and boom, dns is up again.
I've this problem since 6.38. I'm using 6.39rcs now, and the problem is still here. I can be good for weeks, or hours, it's really seems random.
I saw a similar post here from 2013 : viewtopic.php?t=79649 and no solution except using another dns server.
Thx you.