13 Nov 2021

What is IPv6?

What is IPv6?

On the 25th of November 2019, we've officially run out of IPv4 addresses (a big problem!), luckily a new standard called IPv6 was on the way (actually it was available since the year 1999).

Comparison with IPv4

First off, let's talk about some benefits of IPv6

IPv6 also supports way more addresses than IPv4 does. While IPv4 can address about 4.29 billion devices, IPv6 can hold a huge number of addresses: 340,282,366,920,938,463,46 3,374,607,431,768,211,456 (340 undecillion, 282 decillions, 366 nonillions, 920 octillion, 938 septillions, 463 sextillions, 463 quintillions, 374 quadrillions, 607 trillion, 431 billion, 768 million, 211 thousand and 456) which probably is enough till the heat death of the universe (that's an overstatement but you probably get the point).

Now, let's go to IPv6 disadvantages:

Special Addresses:

If you are into networking you probably know that the IPv4 address 127.0.0.1 points to the localhost. Some many addresses and pools have specific uses in the IPv6 world too.

You can also check what is my public IP Address online.

By Maciej Oliwa on 13 Nov 2021


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