Upgrades and DNS

RouterOS General
1

My setup has a RB760iGS as the router, a RBcAPGi-5acD2nD, a RBcAPL-2nD and a RBmAPL-2nD, the 3x APs are all running as CAPs off the router, with the interfaces all configured for DHCP also from the router.

The RB760iGS and the RBcAPL-2nD both upgrade with no issues, from 7.21 to 7.22.1.

The other two APs RBcAPGi-5acD2nD and RBmAPL-2nD cannot resolve the DNS name for the upgrade packages.

Below are the DNS setting from each device, i am happy to provide further details…

RB760iGS - upgrade works



[admin@MikroTik] > /ip dns print 
                      servers:              
              dynamic-servers: 212.159.6.9  
                               212.159.13.49
               use-doh-server:              
              verify-doh-cert: no           
   doh-max-server-connections: 5            
   doh-max-concurrent-queries: 50           
                  doh-timeout: 5s           
        allow-remote-requests: yes          
          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           
      address-list-extra-time: 0s           
                          vrf: main         
           mdns-repeat-ifaces:              
                   cache-used: 258KiB

RBcAPL-2nD - upgrade works

[admin@MikroTik-cAP1] > /ip dns print
servers:
dynamic-servers: 192.168.3.254
212.159.6.9
212.159.13.49
use-doh-server:
verify-doh-cert: no
doh-max-server-connections: 5
doh-max-concurrent-queries: 50
doh-timeout: 5s
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
address-list-extra-time: 0s
vrf: main
mdns-repeat-ifaces:
cache-used: 36KiB

RBcAPGi-5acD2nD - upgrade fails



[admin@MikroTik-cAP-XL] > /ip dns print 
                      servers: 212.159.6.9  
                               212.159.13.49
              dynamic-servers: 192.168.3.254
                               212.159.6.9  
                               212.159.13.49
               use-doh-server:              
              verify-doh-cert: no           
   doh-max-server-connections: 5            
   doh-max-concurrent-queries: 50           
                  doh-timeout: 5s           
        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           
      address-list-extra-time: 0s           
                          vrf: main         
           mdns-repeat-ifaces:              
                   cache-used: 45KiB

RBmAPL-2nD - upgrade fails

[admin@MikroTik-mAP2] > /ip dns print
servers:
dynamic-servers: 192.168.3.254
212.159.6.9
212.159.13.49
use-doh-server:
verify-doh-cert: no
doh-max-server-connections: 5
doh-max-concurrent-queries: 50
doh-timeout: 5s
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
address-list-extra-time: 0s
vrf: main
mdns-repeat-ifaces:
cache-used: 36KiB

2

And what is the failure message?

3

Both failing APs have the same message…

[admin@MikroTik-cAP-XL] /system/package/update> check-for-updates
channel: stable
installed-version: 7.21
status: ERROR: could not resolve dns name (timeout)
[admin@MikroTik-cAP-XL] /system/package/update>