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A History of IPv6 and Its Key Features

A History of IPv6 and Its Key Features
In 1992, the IETF ( became aware of a global shortage of IPv4
addresses and technical obstacles in deploying new protocols due to limitations
imposed by IPv4. An IPng (IP next generation) effort was started to solve these issues.
The discussion is outlined in several RFCs, starting with RFC 1550. After a large
amount of discussion, in 1995, IPv6 (IP version 6) was picked as the final IPng proposal.
The IPv6 base specification is specified in RFC 1883 and revised in RFC 2460.
Agent ME
If you're going to make a topic, at least contribute something to it instead of seemingly copying and pasting from somewhere.

IPv6 does away with the need for NATs, and brings the internet back to the original idea of every node being equal and accessible from other nodes. Ever tried to host an internet game and get told you needed to open ports on your router? Heck, some programs require ports to be opened for clients too. And if you're behind multiple routers or a router you can't control, good luck with this. IPv6 does away with this need entirely.
It also fixes other issues with v4. The most obvious improvement is as Agent ME said, the removal of the need for NAT. With 2^128 addresses available, I can't see the address space ever being exhausted. With IPv4 nearly exhausted, ISPs will start to look at other alternatives, which may include using NAT at the ISP level. However hopefully ISPs will see the benefit in using IPv6 and move towards it.

IPv6 also supports jumbograms, which allow far more data to be sent in a single packet compared to v4.
So data sent through IPv6 is "faster" than data sent through IPv4?

loyal wrote:
So data sent through IPv6 is "faster" than data sent through IPv4?


No. There is no interpretation where that's a valid thing to say.
AftershockVibe wrote:
loyal wrote:
So data sent through IPv6 is "faster" than data sent through IPv4?

No. There is no interpretation where that's a valid thing to say.

So the only real benefit is more ip addresses?
But according to this, it IS faster:

IPv6 will be faster in several ways. Physically, because IPv6 does not fragment the packets as IPv4 does. Logically, because IPv6 will be hierarchical, thus internet routers won't need such large routing tables. In addition, IPv6 headers have been redesigned to speed their path through a router and to create true 'end to end' capability, the result is more efficient network traffic on the internet backbone

Another difference between IPv4 and IPv6 is in the smarter allocation of IPv6 addresses. Rather than first come first served basis as seen with IPv4, IPv6 addresses will be leased on geographic region. Take Europe for example, RIPE (Réseaux IP Européens) has allocated the UK-BT IPv6 addresses beginning with 2001:0618


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