IPv6 is really just IPv4 with more address space. There are a bunch of extensions that nobody uses, sure, but nobody uses them and they can be safely ignored in

IPv6 is really just IPv4 with more address space. There are a bunch of extensions that nobody uses, sure, but nobody uses them and they can be safely ignored in most cases. The only other significant change from V4 to V6 is the use of multicast instead of dumb broadcast for V6's equivalent of ARP on LANs. That's an improvement as it allows smart switches to more easily scale address lookup.