To install arp-scan on Ubuntu or Debian type: $ sudo apt-get install arp-scanįor Fedora, CentOS or Redhat: $ sudo yum install arp-scan If there is multiple MAC addresses claiming the same IP address, then there is conflict. This tool sends ARP (Address Resolution Protocol) packets on local network to collect the addresses. If you’re having connectivity issues and suspect it is due to IP conflict you can use a tool called arp-scan to detect them. Or it can happen when there are more than one DHCP servers giving IP’s on the same network from the same subnet. When a dynamic IP is assigned and there is already another device on the network with the same static IP. The dynamic ones who change frequently (a few times a day) and the static ones who, as the name suggests, are static, as in they don’t change. They are assigned by DHCP servers and the change frequently. You all know what IP addresses are, right? How they are assigned to devices on a network to represent them.
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