World IPV6 day – June 8, 2011 – Is IPV6 the new Y2k?

IPV6 is the newest version of the Internet Protocol (aka: IP)
IPV6 will eventually replace the good, old and charming IPV4, the fourth version of IP, in use since September 1981.
95% of all technology professionals working today grew up with the IPV4 paradigm, but IPV4 has its days counted:

Some reasons:
IPV4 supports “only” Four billion addresses (4,294,967,296 addresses to be precise). Meanwhile, IPV6 supports about 340 undecillion addresses. The reason is the address space. IPV4 supports 32 bit address space and IPV6 supports 128 bit address space

The use of smart phones, IPads, laptops and other mobile devices has depleted the number of IPV4 addresses available to use. So we are running out of addresses.

IPV6 will provide extra security (encryption and authentication options are included in IPv6 in order to provide packet’s integrity and confidentiality)

IPV6 will provide Extensibility: IPv6 has been designed in a way that a protocol can be extended easily to meet the requirements of new technologies and new applications.

Resource Allocation support – IPV6 has a built-in Flow label mechanism (understand flow as “…a sequence of packets sent from a particular source to a particular unicast, anycast, or multicast destination that the source desires to label as a flow…” RFC 3697 J. Rajahalme
and others). Read RFC 3697 to better understand Flow Label Mechanism. IT IS BEAUTIFUL!

IPV4 and IPV6 are not compatible at the packet level, so older Operating system can’t understand IPV6, but If you are running Windows XP service Pack 1 or above your machine should be able to understand IPV6 addressing. Windows 2000 and older OS won’t understand IPV6.

In terms of date and time, IPV6 won’t be as critical as Y2K. because it won’t require hardware and software manufacturers to modify application codes based on a date in time like Y2k. These manufactures will incorporate changes over a number of years. June 8, 2011 will be a test. Some companies may implement a hybrid mode (IPV4 and IPV6 running simultaneously) after that date, but the greater majority will wait until the IPV6 achieves critical mass in terms of hardware and software availability to avoid disruption
But the impact of IPV6 should be more profound than Y2k. IPV6 will fundamentally change the way the OSI model works for the first three layers (L1 – Physical; L2 Data Link and L3 Network, the “IP” layer). The top four layers should not be affected by the changes

About World IPv6 Day
“On 8 June, 2011, Google, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organisations that will offer their content over IPv6 for a 24-hour “test flight”. The goal of the Test Flight Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out.”

How to test if your computer is IPV6 ready:
You can run a test to find out if your computer is ready for IPV6: by going here:

more details about IPV6 here:
and here:

Details about Flow Label Mechanism:

How IPV6 is structured:

IPV6 128 bit breakdown

IPV6 128 bit breakdown


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