The Internet has suddenly become a larger place, with enough room to accommodate your home PC, your TV set, your laptop, your tablet, your cellphone, your dog and your dog`s cellphone. The introduction of IPv6 is not only a quantitative upgrade to mitigate the crowded address space. The most obvious benefits for the user who has never been concerned with the administrative part of network address depletion are in the areas of security and reliability. The new version of the Internet Protocol features some qualitative upgrades: source address election for computers with multiple addresses.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/ipv6-is-here-ready-to-embrace-it/