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Cake day: July 5th, 2023

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  • It has to do with link priority on the server. You’d imagine that a server that receives a packet that has a return address on the same subnet as it self logically would use that interface instead.

    A similar thing happens in switches. For example if you have two vlans on a switch and both vlans have an ip assigned, connect a computer to one of the vlans. You will only be able to reach the switch on the non-routed connection. Even if you also are allowed to reach the second vlan through a router/Firewall.


















  • By making a bridge in the opensense interfaces you have created a layer2 network. This means that all the devices connected on that network are broadcasting their Mac addresses and are added to the ARP table on the opensense. Since they all are on the same physical network and the same subnet, none of the traffic will ever hit the layer 3 rules on your opensense.

    If you want opensense to handle the rules of the traffic you will need to put the devices on different subnets and separate clans. Create a gateway address for every vlan on the opensense and point your devices to the opensense as their gateway.