Answer:
hop limit
Step-by-step explanation:
Hop limit (as called in IPV6), or Time to live (as called in IPV4) is one of the fields in data packet. It is used to limit the life time of a packet in a network by specifying the allowable limit on the number of hops for which a packet is allowed before being removed from the network. It prevents a network from holding a packet forever. So when a router receives a packet, before forwarding it, it decrements the packet's hop limit by 1. If the hop limit gets to zero, any router holding it will drop it rather than forwarding it. This will help remove the packet from the network.
Hope this helps!