Hello!
I have RouterOS 6.35.2 on hAP ac (mipsbe). Problem appeared some time ago (can’t tell exact date). When I tried to upgrade to 6.35.2 I noticed that upgrade could not resolve upgrade.mikrotik.com. I performed upgrade manually hoping that would resolve some DNS bug, but it did not. I have ran out of ideas where to look for issues.
So, mikrotik configuration is as follows:
> /ip dns print
servers: 8.8.8.8
dynamic-servers: 80.232.230.241,195.122.12.241
allow-remote-requests: no
max-udp-packet-size: 4096
query-server-timeout: 2s
query-total-timeout: 10s
cache-size: 2048KiB
cache-max-ttl: 1w
cache-used: 9KiB
/ip dns>
Now let’s try and ping stuff from routeros:
> /ping zuze.laacz.lv
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
> /ping 185.35.69.14
SEQ HOST SIZE TTL TIME STATUS
0 185.35.69.14 56 61 5ms
1 185.35.69.14 56 61 6ms
sent=2 received=2 packet-loss=0% min-rtt=5ms avg-rtt=5ms max-rtt=6ms
Let’s do that from a PC located behind this hAP via all configured nameservers:
C:\>nslookup
Default Server: google-public-dns-a.google.com
Address: 8.8.8.8
> zuze.laacz.lv
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name: zuze.laacz.lv
Address: 185.35.69.14
> server 8.8.4.4
Default Server: google-public-dns-b.google.com
Address: 8.8.4.4
> zuze.laacz.lv
Server: google-public-dns-b.google.com
Address: 8.8.4.4
Non-authoritative answer:
Name: zuze.laacz.lv
Address: 185.35.69.14
> server 80.232.230.241
Default Server: ns10.lattelecom.lv
Address: 80.232.230.241
> zuze.laacz.lv
Server: ns10.lattelecom.lv
Address: 80.232.230.241
Non-authoritative answer:
Name: zuze.laacz.lv
Address: 185.35.69.14
> server 195.122.12.241
Default Server: ns13.lattelecom.lv
Address: 195.122.12.241
> zuze.laacz.lv
Server: ns13.lattelecom.lv
Address: 195.122.12.241
Non-authoritative answer:
Name: zuze.laacz.lv
Address: 185.35.69.14
And also a ping to make sure:
C:\>ping zuze.laacz.lv
Pinging zuze.laacz.lv [185.35.69.14] with 32 bytes of data:
Reply from 185.35.69.14: bytes=32 time=5ms TTL=60
Ping statistics for 185.35.69.14:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 5ms, Maximum = 5ms, Average = 5ms
Control-C
^C