DNS issue on bridge + vlan +trunk

RouterOS General
1

Hi experts, I’m kindly asking for help. I have trunk on my interfaces, and according to docs I need to create same VLAN and bridge them together. It is working, but I have issue with DNS on my bridge-home.

Ping on interface if working, but DNS request not.

Pinging 192.168.2.1 with 32 bytes of data:
Reply from 192.168.2.1: bytes=32 time=3ms TTL=64
Reply from 192.168.2.1: bytes=32 time<1ms TTL=64
Reply from 192.168.2.1: bytes=32 time<1ms TTL=64
Reply from 192.168.2.1: bytes=32 time=1ms TTL=64




nslookup google.com 192.168.2.1
;; communications error to 192.168.2.1#53: timed out
;; communications error to 192.168.2.1#53: timed out
;; communications error to 192.168.2.1#53: timed out
;; no servers could be reached

I have assigned same IP to my vlan2-home-eX interfaces,

/ip/address/print 
Flags: X - DISABLED, D - DYNAMIC; S - SLAVE
Columns: ADDRESS, NETWORK, INTERFACE
 #    ADDRESS           NETWORK        INTERFACE       
 0  S 192.168.2.1/24    192.168.2.0    vlan2-home-e2   
 1 X  192.168.1.55/24   192.168.1.0    vlan1-mngmt-e2  
 2    192.168.9.1/24    192.168.9.0    bridge-guest    
 3    172.31.254.2/32   172.31.254.2   Loopback1       
 4    192.168.1.1/24    192.168.1.0    bridge-mngmt    
 5    192.168.8.1/24    192.168.8.0    bridge-smarthome
 6 X  192.168.6.1/24    192.168.6.0    vlan6           
 7    192.168.2.1/24    192.168.2.0    bridge-home     
 8 X  46.151.56.137/29  46.151.56.136  ether1-wan      
 9  S 192.168.2.1/24    192.168.2.0    vlan2-home-e3   
10  S 192.168.2.1/24    192.168.2.0    vlan2-home-e4   
11  S 192.168.2.1/24    192.168.2.0    vlan2-home-e5   
12 D  46.151.56.137/28  46.151.56.128  ether1-wan

when I change one interface to different IP, then DNS on that interface is working

 /ip/address/print 
Flags: X - DISABLED, D - DYNAMIC; S - SLAVE
Columns: ADDRESS, NETWORK, INTERFACE
 #    ADDRESS           NETWORK        INTERFACE       
 0  S 192.168.2.254/24  192.168.2.0    vlan2-home-e2




nslookup google.com 192.168.2.254
Server:         192.168.2.254
Address:        192.168.2.254#53

Non-authoritative answer:
Name:   google.com
Address: 142.251.208.174
Name:   google.com
Address: 2a00:1450:400d:808::200e

but when I change IP again to 192.168.2.1, then DNS requests does not work.

Here is part of my config, with interfaces and ip export.
interfaces_ip.txt (31.6 KB)
Yes, I’m not an expert. Any help ? Thank You.

2

Can you please add complete config?

3

Where do you see on any post, anyone asking for a part config LOL.
/export file=anynameyouwish ( minus router serial number, any public WANIP information, keys)

4

Turns out the config is at least a very large part (or updated?).
Please, for a lot of reasons, only use a single bridge and add VLAN’s.

The latter can be best setup by reading this great article/topic:
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1

Once you have configured it correct, you will love the clarity of using VLAN’s!