> ping 10.10.10.1
PING 10.10.10.1(10.10.10.1): 56 data bytes
64 bytes from 10.10.10.1: icmp_seq=0 ttl=64 time=1.143 ms
64 bytes from 10.10.10.1: icmp_seq=0 ttl=64 time=1.283 ms (DUP!)
64 bytes from 10.10.10.1: icmp_seq=1 ttl=64 time=10.634 ms
64 bytes from 10.10.10.1: icmp_seq=1 ttl=64 time=10.671 ms (DUP!)
^C
— 10.10.10.1 ping statistics —
4 packets transmitted, 4 packets received, +4 duplicates, 0% packet loss
round-trip min/avg/max/stddev = 0.737/2.889/12.883/3.975 ms
Tech Junction Answered question 11 hours ago
The “DUP!” in your ping results indicates that the ping command has received duplicate replies from the same IP address. This can happen for a few reasons:
- Duplicate IP Addresses: Two devices on the network might be configured with the same IP address.
- Network Issues: Echo requests or replies might be getting duplicated somewhere in the network.
- Different MAC Addresses: The same IP address might be associated with different MAC addresses, causing multiple replies.
To troubleshoot, you can:
- Check for duplicate IP addresses on your network.
- Use network monitoring tools like Wireshark to trace where the duplication is happening.
- Verify the ARP cache and CAM table to ensure there are no conflicts.
If you need more detailed steps, feel free to ask!
Tech Junction Answered question 11 hours ago