The abbreviation " VPN " has slowly become established among average Internet users, which is certainly good, but the problem is that people have started to see VPN as the ultimate solution to all problems.
Internet Protocol Version 6 (IPv6) is a network layer protocol, the successor to the Internet Protocol (IPv4), designed by the IETF (Internet Engineering Task Force).
In IPv6, a new (but not yet widely used) standard Internet protocol, where 128-bit addresses are wide, which, even with large netblock allocations, should satisfy the near future.
Theoretically, there would be exactly 2128, or 3,403 × 1,038 unique host interface addresses. If the earth were made up entirely of a 1cm³ grain of sand, then a single address could be assigned to each grain in 300 million planets the size of the earth. This large address space will be rarely filled, allowing more routing information to be re-encoded into the addresses themselves.
IPv6 addresses are 128 bits long. Addresses are assigned to individual interfaces on nodes, not nodes in person. A single interface can have multiple unicast addresses. Any of the unicast addresses associated with a node interface can be used to uniquely represent that node. The combination of long addresses and multiple addresses per interface allows more efficient routing compared to IPv4.
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