the original intention for the time to live field in a packet was that it'd be decremented by the time in seconds the packet is queued by each router through which it is being forwarded... that had limited practical appeal, and was never actually implemented... instead, routers decrement the packet's ttl field by one no matter the length of time it is queued... when it reaches zero it is dropped...
in ipv6, the corresponding field known as hop limit (more aptly stated) works the same way
so in both ipv4(ttl) and ipv6(hop limit) this idea remains in effect...
network cisco ccna gns3 certification arteq
a network runs through it
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