A router receives an IPv4 packet. The source ip address is 10.55.72.234. the destination host is 10.4.6.7. the TTL value is 1. The protocol field value 6. What will the router do with this packet?
The router will take the following actions with the given IPv4 packet:
1. The router will receive the packet at one of its interfaces.
2. It will first check the Time to Live (TTL) value of the packet, which in this case is 1.
3. Since the TTL value is 1, the router will decrement the TTL field by 1.
4. If the TTL becomes zero after decrementing, the router will discard the packet and send an Internet Control Message Protocol (ICMP) Time Exceeded message back to the source IP address (10.55.72.234) stating that the TTL expired.
5. If the TTL is more than zero after decrementing, the router will perform a routing table lookup to determine the next-hop destination for the packet based on its destination IP address (10.4.6.7).
6. The router will then forward the packet to the next-hop destination based on the routing table entry.
7. Once the packet reaches the next-hop, it will continue to be processed until it reaches its final destination.
In summary, the router will decrement the TTL, check if it becomes zero, and if not, forward the packet based on the routing table.