mangle rule - prerouting

RouterOS Beginner Basics
1

Hi there,
I’m still learning the mikrotiks and was wondering if someone could help with a couple of things..

I would like to:
force anything coming in Eth10 to go back out Eth10.
see where the traffic from Eth10 is going (i’m pretty sure its getting routed elsewhere, but not sure how to check)

Issue:
its not returning packets back to Eth10. I think because i have a default route in place which it’s using.

I’m trying to use a mangle rule. but it doesn’t seem to be working.
ip firewall Mangle add chain=prerouting out-interface=Eth10 action=mark-routing new-routing-mark=BackToEth10
Ip Route Add Dst-Address=0.0.0.0/0 Gateway=“Eth10” Routing-Mark=BackToEth10

Any help would be much appreciated
cheers

2

Hi,

in your mangle rule you are using-out interface.

Packet will only get marked when data is leaving the port.

Try using in-interface as eth10 for a start.

If eth10 is in a bridge then you are going to have issues