Fix: Unknown and Strange Devices Showing Up on Network. By Kevin Arrows June 24, 2018. IP Address is not performed as the handshake is not completed, so it fails to acquire network status. Is internet explorer for mac available. If the device has an IP address then it is connected to your Wi-Fi successfully.
However, computers connected to the same local network can determine each other's MAC addresses. The technology called included with TCP/IP makes it possible. Using ARP, each computer maintains a list of both IP and MAC addresses for each device it has recently communicated with. Most computers allow you to see the list of IP and MAC addresses that ARP has collected there. In Windows, Linux and other operating systems, the command line utility 'arp' shows this information. Using 'arp,' you can in fact determine the MAC address of some computers from their IP address. ARP works only within the small group of computers on a, though, not across the Internet.
ARP is intended for use by system administrators and is not generally useful as a way to track down computers and people on the Internet.
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