The difference between IPv4 and IPv6 lies mainly in addressing and efficiency. IPv4 uses a 32-bit address (around 4.3 billion unique addresses), while IPv6 uses a 128-bit address, offering an almost unlimited number of addresses. IPv6 also provides better security, faster routing, and supports modern internet growth, whereas IPv4 is limited and relies on techniques like NAT to extend ... https://www.uninets.com/blog/compare-ipv4-and-ipv6-addressing