My DNS configuration:
ip dns print
servers: 118.179.223.10,202.4.96.6,8.8.8.8
dynamic-servers:
allow-remote-requests: no
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 10s
max-concurrent-queries: 100
max-concurrent-tcp-sessions: 20
cache-size: 2048KiB
cache-max-ttl: 1w
cache-used: 23KiB

I've tried to ping in google.com. But unable to get ping response. How can I fixed it.
ping google.com
invalid value for argument address:
invalid value of mac-address, mac address required
invalid value for argument ipv6-address
while resolving ip-address: could not get answer from dns server

Can you ping any of IPs you entered as upstream DNS servers? Check FW rules for chains output and input ... input should accept at least established and related connections ....

Hello, Jahir! How is it now?

I've ping entered upstream DNS servers but same problem can't get ping response. This router have two filter rules. I've clear log registry but there are no progress..
Flags: X - disabled, I - invalid, D - dynamic
0 chain=input action=accept src-address-list=Allow log=no log-prefix=""

1 chain=input action=drop log=no log-prefix=""

2 X chain=input action=drop protocol=tcp dst-port=53 log=no log-prefix=""

3 X chain=input action=drop protocol=udp dst-port=53 log=no log-prefix=""

Add this as the first rule: It will allow to receive replies.

Thanks a lot it's working.