Networking

Introduction Even in 2026, ARP (Address Resolution Protocol) is still quietly doing a lot of work behind the scenes in IPv4 networks. IPv4 hasn't disappeared LANs are still full of Ethernet segments Every IPv4 packet still has to be delivered over a Layer 2 tec...

Introduction IP addressing is one of those things that "just has to work" - until it doesn't. When addresses clash, leases expire, or a key server suddenly "moves," users immediately feel it as downtime, slowness, or "the network is broken." By 2026, networks are mor...