.. _example_interfaces_ethernet_traffic_policy_link_checklinkhook: ############### Check Link Hook ############### This scenario shows how to attach a traffic policy to the ``link`` hook in an Ethernet interface. This hook is triggered at a very early stage of the network packet stack (level 2 layer). packet stack. .. image:: topology.svg :width: 800 ********************** Test Early Packet Drop ********************** Description =========== A traffic policy is configured in DUT0 to drop all incoming traffic at the link stage. ARP and ICMP packets are allowed. Scenario ======== .. include:: checklinkhook/testearlypacketdrop .. raw:: html