ICANN – Internet Corporation for assigned network numbers (IPv6)
IPv4 for AINA – Assigned Internet network authorative.
Address Assignment Features:
IPv6 address assignment allows eaiser renumbering dynamic allocation and recovery of address with nice feature for mobile devices to move around and keep their IP Address.
IPv6 use address space makes for much eaiser aggregation of blocks of address in the internet. No need of NAT or PAT. Using publicly registered unique address on all devices removed the need for NAT or PAT which also avoids some of the application layer and VPN tunneling issues caused by NAT.
IPSec works with both IPv4 and IPv6. But it is required on IPv6 host. It can be relay on support for IP sec as needed for VPN tunneling.