OSPF and route tags in filter

RouterOS Forwarding Protocols
1

Hi folks,

I’ve been using RouterOS on our network for quite long time and now, as the network grows, we are deploying OSPF routing. Our setup consists of two Linux router running Bird routing daemon (http://bird.network.cz) propagating two default routes and a bunch of Routerboards in area 0 with adjacent other areas.

When I set export filters on Linux machine to include route tag accordingly, I can see the appropriate route tags in LSA DB.

instance=default area=external type=as-external id=0.0.0.0 originator=10.203.251.100 sequence-number=0x80000025 age=192 checksum=0xB329 options="E" body=
     netmask=0.0.0.0
     forwarding-address=0.0.0.0
     metric=10000
     route-tag=0x64
     type2

However, I am unable to filter these routes based on route-tag in routing filters. When I set route-tag in route filter and set action to log, no information are logged. Tested on 4.17,5.14 and 5.16.

Any hints? Am I doing something wrong?