What are the key differences between IP version 4 and IP version 6? or Should I still use IP version

Why not both? Dual-stack is the way to go rn. IPv4 for compatibility, IPv6 for future-proofing.

And yeah, IPv6’s addressing is wild—no more subnetting headaches. But tbh, if your ISP doesn’t support it, you’re stuck tunneling.

Check out HE’s IPv6 certification if you wanna dive deeper.