It is generally considered better to use IPv6, which is a newer and latest version of the Internet Protocol (IP) after IPv4. There are several reasons for this:
- Larger Address Space: IPv6 has a much larger address space than IPv4, which allows for a much larger number of unique IP addresses. This is important as the increasing number of devices connecting to the internet is rapidly depleting the available IPv4 addresses.
- Improved Security: IPv6 includes built-in security features, such as IPsec (Internet Protocol Security) encryption, which helps to protect against attacks and improve the overall security of the internet.
- Better Support for Mobile Devices: IPv6 has better support for mobile devices and enables easier network transitions for mobile users, allowing for smoother and more efficient mobile connectivity. This is possible because IPv6 gets rid of the NAT and allows for a few different optimizations.
- More Efficient Routing: IPv6 uses simpler and more efficient routing algorithms, which helps to reduce network congestion and improve network performance.
That being said, IPv4 is still widely used and many networks continue to use both IPv4 and IPv6, with IPv4 being used as a fallback for devices that do not support IPv6. The transition to IPv6 is ongoing and is expected to take several more years to complete.