I have an issue with an RB1100AHx2: I'm getting GRE traffic on the interface facing the internet.
The traffic (seen with torch) is between a host on the same subnet as my router(both are connecting to the ISP router) and a different ip from the internet. It is GRE and since it is not meant for my router I can't filter it with the firewall.
The question is: why do I see this traffic on the interface(eating bandwidth) if it is not meant for my router?
Any help is apreciated. Thanks.
Attached diagram below