As far as I do understand VLAN on the Mikrotik.
When you connect VLAN to the Bridge, you need VLAN filtring ON.
Or else it does not underestand that you have more than one VLAN.
I do not see what interface VLAN 180,169, and 170 is connected to.
You may try some like this. Interface bridge vlan does connects to ports and bridge, not to the VLAN itself
/interface bridge vlan
add bridge=localnetwork tagged=localnetwork,ether6-LAN vlan-ids=169
add bridge=localnetwork tagged=localnetwork,ether6-LAN vlan-ids=170
add bridge=localnetwork tagged=localnetwork,ether6-LAN vlan-ids=180
Since all are equal, this may be shorten to some like this: (not testet so can not confirm this)
/interface bridge vlan
add bridge=localnetwork tagged=localnetwork,ether6-LAN vlan-ids=169,170,180
Now VLAN 1 should came untagged on port 6 and vlan 169.170 and 180 tagged on port 6
See my post at 9:15am here: http://forum.mikrotik.com/t/sofware-vlan-bridge-on-ruteros-explained/122534/1