Skip to main content

Are you ready for IPv6?

To test your readiness for IPv6 switch, go to http://test-ipv6.com/.

To learn more of IPv6, visit http://www.nro.net/ipv6.

Some facts on IPv6

Since IPv6 addresses are 128 bits long, the theoretical address space if all addresses were used is 2128 addresses. This number, when expanded out, is 340,282,366,920,938,463,463,374,607,431,768,211,456, which is normally expressed in scientific notation as about 3.4*1038 addresses. That's about 340 trillion, trillion, trillion addresses.

It's enough addresses for many trillions of addresses to be assigned to every human being on the planet.

The earth is about 4.5 billion years old. If we had been assigning IPv6 addresses at a rate of 1 billion per second since the earth was formed, we would have by now used up less than one trillionth of the address space.

The earth's surface area is about 510 trillion square meters. If a typical computer has a footprint of about a tenth of a square meter, we would have to stack computers 10 billion high blanketing the entire surface of the earth to use up that same trillionth of the address space.
Looks like this figure is almost infinite.

Popular Posts

Ho Ching named 5th most powerful and is mistaken as first lady by Forbes

Forbes named Singapore Prime Minister wife and CEO of Temasek Holdings, Ho Ching, as the 5th most powerful woman in the world. Ho Ching is mistaken as Singapore's first lady! OMG!

I wonder how can Forbes makes such a blunder. For a complete list, refer to here.

How to stop FortiClient from starting automatically?

Installed FortiClient recently but the challenge in disabling the application/service from running automatically on every start-up annoyed me. Attempt to stop 'FortiClient Service Scheduler' only return 'Parameter is incorrect' error message.

An article on Technet help solve my trouble. To stop FortiClient from starting automatically, try the following:
Shut down FortiClient from the system tray.
Run net stop fortishield on command prompt.
Run msconfig.
On msconfig, switch to the Services tab. Clear the FortiClient Service Scheduler check box and click Apply.Run services.msc on command prompt to open up show all available services.Look for FortiClient Service Scheduler. Switch Startup type to Manual.Restart your computer. FortiClient should not be running automatically the next time round. Hope it helps.

ACJC Birthday Girl Tied Up and Tortured

The two videos mentioned are particularly shocking to me because of two factors. First of all, the perpetrators are practically all females, with a few boys in the background cheering. I never knew women are into such cruelty as well. Second, it occurred in bright daylight at a crowded school canteen - where everybody can see! The poor victim was tied to a chin-up bar and attacked mercilessly. All in the name of “celebrating” her birthday.

The school where all these took place is a well-reputed school - Anglo-Chinese Junior College (ACJC). (No point in concealing the school’s identity as the uniform of the students involved is obvious).

Video captured on the incident was uploaded onto YouTube but was taken down after this matter was blown up.

ACJC girl gets tied up and tortured… by friends “celebrating” her birthday [via]