This guide explains the difference between IPv4 and IPv6 in a clear and practical way. IPv4 uses 32-bit addressing with limited IPs, while IPv6 introduces 128-bit addresses for massive scalability. It also covers security improvements, header efficiency, auto configuration, and routing performance, helping learners understand why IPv6 is essential for modern networking. https://pmnetworking.in/ipv4-vs-ipv6-what-are-the-key-technical-differences/