07-09-2014, 08:31 PM
In the current Internet architecture, IP address used for the node identifier, that is, generally a single IP address is assigned to a node, and used permanently until the node becomes inactive. The same address is used for all communications from/to the node. However, this communication paradigm has a fundamental problem regarding limited address space to internet protocol and security .ipv4 is limited 32 bit structure with limited number of features. So ipv6 provides a features and functions for tommorrow’s network that ipv4 doesnt provides.