| http://www.w3.org/ns/prov#value | - The ICMP packet is a function well known in the ???Ping??? program. ???Ping??? is a program by which it is judged whether communication is possible or impossible by sending a Type=8 ICMP packet to a specific node, by use of a protocol function that the node which has received an ICMP packet of Type=8 (Request) in the IP header of the ICMP format 60 of FIG. 16 is required to return a Type=0 (Reply)
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