> 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 7 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 7 hours ago