What is an IP conflict and how can I detect one on my network?


All IOT (Internet Of Things) assigns a unique IP address, but sometimes problems may occur when two identical IP addresses are on the same network. This problem may occur if a computer has a static IP address and another computer is automatically assigned (DHCP), same IP address.

The dynamics change often (a few times a day), but the static ones, does not change. In short, there must not be two identical IP addresses on the same network.

NOTE! You can not use this tool to control your wireless network, only via cable.

How to check if there is an identical IP address on the same network, open a terminal window and install arp-scan:

sudo apt-get install arp-scan

Press Enter.

Type the following command:

sudo arp-scan –I eth0 -l

If the same IP address is displayed twice, it is another computer with the same IP address.

Find its owner and solve the problem.

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