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For questions about a physical or virtual interface on a network device. For instance: Interface configurations, troubleshooting and security.
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Why Linux answers ARP requests for IPs that belong to different network interfaces? [closed]
My machine has a physical network interface (eno1) and a bunch of virtual network interfaces (e.g. tap0). Each interface has its own IP and their subnets do not overlap. … request, and it will respond with the MAC address of eno1 (that is, it responds with the MAC address of the interface that received the ARP request, regardless of which interface had the IP address)
Linux …