The time to live field in IPv4 has the same basic function as the hop limit field in IPv6.

Question

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Both the time to live field in IPv4 and the hop limit field in IPv6 are used to limit the number of hops (or routers) that a packet can traverse before it is discarded. This helps prevent packets from endlessly circulating a network or getting stuck in a loop. Once the TTL or hop limit reaches zero, the packet is dropped and an error message may be sent back to the sender.

The Time to Live Field in IPv4 Has the Same