Thank you. Enabling "Allow Ethernet Bridging" fixed the OSPF issue. But Zerotier on FreeBSD and Linux does not require Bridging to be enabled. There OSPF works.

Mikrotik zerotier does not see multicast packets from other routers on this interface. Other OS through Zerotier ospf successfully work with each other and see Hello Packet mikrotik. Unicast goes both ways. I started using zerotier in mikrotik from version 7.1.1, the problem remained in v7.1.2. RB40...

After a year of work, my HAP AC2 failed. Bought to replace RB4011. And in this device, for 3 days of operation, WiFi turned off 2 times. Does everyone have a problem or replace the device in the store?

Unfortunately at the moment you will not be able to access global variables from netwatch executed scripts.

"at the moment" this mean that mikrotik will fix this problem? Or better with mikrotik
no longer messing with?

Hi. In version 6.30 not execute /ip firewall connection print 3 S C icmp 192.168.0.10 192.168.0.20 3s 0bps 0bps 1 1 56 56 /ip firewall connection remove 3 action timed out - try again, if error continues contact MikroTik support and send a supout file (13) In the previous version of the executable. ...

I was hoping that this feature will correct MikroTik.
And from it was the only answer that it works how it works .

connection-state (estabilished | invalid | new | related; Default: ) Interprets the connection tracking analysis data for a particular packet: established - a packet which belongs to an existing connection invalid - a packet which could not be identified for some reason new - the packet has started ...

I understand the rules of procedure for passing.
Order flow does not affect the fact that usually all the last rule in the firewall forward prohibits the passage of incoming connections.
What's the point having a firewall on it to allow all incoming connections?

Dynamic nat rules will work if all the filter will be allowed, but no one does. Firewall order is not to put all generally allowed in the filter. In mikrotik have specialists who understand what I'm saying? If you do not allow the filter to the nat does not fall. Ie all have a problem, and mikrotik ...

UPnP does not create dynamic rules in ip firewall filter. UPnP create dynamic rules only ip firewall nat. I found a topic 2 years ago, where it is solved by the scripts http://forum.ixbt.com/topic.cgi?id=14:57592-41#1141 http://forum.ixbt.com/topic.cgi?id=14:57592-42#1148 Mikrotik did for so many ye...