I have suddenly started getting multiple alerts in the log that look like this:
ether7: bridge port received packet with own address as source address (74:4d:28:01:2f:3a), probably loop
I also get it on ether5 sometimes but mostly ether7.
It seems to indicate that the MAC that represents the bridged ports on the router is sending itself data which seems odd to me.
Along with this issue now suddenly DNS requests are taking a long time, like 5 seconds delay while resolving host every time I go to a new web page.
Also want to add that in the properties for 'bridge1', (my combined bridged interfaces on the router) there is a 'Status' tab and that tab shows 'Root Port' to be a different mikrotik switch on the network. That switch is not supposed to be anything special just one of several switches that connects various clients and then connects back to the router/switch, that seems odd to me as well but I'm not familiar with STP.
My network is pretty simple, RouterBoard RB1100AHx4 running v6.44.3 is taking in our Internet and distributing through the integrated (bridged) switch ports to various small switches and some Unifi access points.
The overall design is a simple star with the router/switch at the center and we don't have any redundant paths built in, at least not on purpose.
Hoping someone can help, it's weird this just started happening with no changes on the network that I'm aware of but of course some user could have added something without telling me since this is a place where people live, not just a work place. If you need more info just ask and I'll post whatever you need.
This is for a non-profit who pays me very little to help them due to their very limited finances.