What happens if 2 ip addresses are the same

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This has the following reason: whenever a package arrives for the IP address in question the router asks the whole subnet "who has IP address foo? The answer contains the hardware address aka MAC of the network interface and will be written into the so-called ARP cache of the router for future at least the next 5 minutes use. So, whoever answers first will be the destination regardless of being the correct target of the specific package which could have been requested by another network interface with the same IP address.

Furthermore, most routers discard packages from network interfaces that claim to have a specific IP address but don't match the existing ARP cache entry. Thus network interfaces with the same IP address can't initiate network connections for a time. It is up to the DHCP server to honor that or not. The first device does a DHCP req. The second device does a DHCP req. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn more. What happens if 2 devices want the same static IP address? Ask Question. Asked 6 years, 8 months ago. Active 5 years, 3 months ago. Viewed 20k times. Improve this question. John John 1 1 gold badge 2 2 silver badges 4 4 bronze badges. If your question pertains to Windows environments, this article explains it well.

Also, static IPs are just that, static. Vinayak, thanks! The article was definitely helpful! Save Article. Improve Article. Like Article. Public and private network. Next Overview of Dynamic Partition in Hive. Recommended Articles. Minimize sum of absolute differences of same-indexed elements of two given arrays by at most one replacement. Two dice are thrown simultaneously, find the probability of getting same number on both dice? Article Contributed By :.