Issue with DNS pcc load balancing

RouterOS General
1

Hi

I have issue with certain users complaining that their internet not working when connected to network.

Upon checking I could see below DNS.

doppa
doppa994×522 121 KB

I use mangle pcc to load-balance the isp and I have pcc load balancing.

chain=prerouting action=mark-connection new-connection-mark=WAN6_conn passthrough=yes dst-address-type=!local src-address-list=!UC dst-address-list=!billing connection-mark=no-mark in-interface-list=LAN per-connection-classifier=both-addresses:6/5

I changed the pcc to from source address to destination address I have the same issue.

Is this issue likely external, have anyone observed this issue.

Thanks.

2

Probably you have more than PCC load balancing. E.g. you use recursive routing to failover between the ISPs and you use 8.8.8.8 as a recursive route destination to probe.

If that is the case, you need to exclude that address from the PCC load balancing (e.g. put another rule before it which does not have passthrough enabled)

3

Useless without full config, minus sensitive information………..

4

I totally agree. Please provide export:
ip firewall mangle export
ip firewall nat export
ip route export

5

full not partial :slight_smile:

/export file=anynameyouwish ( minus router serial number, any public WANIP information, keys, dhcp lease lists )