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Add a comment. Active Oldest Votes. Improve this answer. Add a comment. Active Oldest Votes. Improve this answer. Jeff Wheeler Jeff Wheeler 4, 7 7 silver badges 17 17 bronze badges. Actually, the TTL was both time and hop count based. Quoting RFC : "The time is measured in units of seconds, but since every module that processes a datagram must decrease the TTL by at least one even if it process the datagram in less than a second, the TTL must be thought of only as an upper bound on the time a datagram may exist".
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