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This test ensures that upon receiving decapsulated packets from a tunnel interface in openvswitch, the tunnel metadata fields are properly populated. This partially covers interoperability of the kernel tunnel ports and openvswitch tunnels (LWT) and parsing and formatting of the tunnel metadata fields of the openvswitch netlink uAPI. Doing so, this test also ensures that fields and flags are properly extracted during decapsulation by the tunnel core code, serving as a regression test for the previously fixed issue with the DF bit not being extracted from the outer IP header. The ovs-dpctl.py script already supports all that is necessary for the tunnel ports for this test, so we only need to adjust the ovs_add_if() function to pass the '-t' port type argument in order to be able to create tunnel ports in the openvswitch datapath. Reviewed-by: Aaron Conole <aconole@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Link: https://patch.msgid.link/20250909165440.229890-3-i.maximets@ovn.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>