| http://www.w3.org/ns/prov#value | - ext to said layer-2 device in a route from said first system to said second system; means for generating in said layer-2 device a response packet, wherein said response packetindicates whether said second system is connected directly to said layer-2 device, said means for generating including data identifying said next device in said response packet if said second system is not connected directly
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