Tomorrow, June 8th, is World IPv6 Day and you’ll probably be able to connect to the Internet with no problems, but you may experience unusual or unexpected issues using the ‘net. Here’s what’s going on and why.

World IPv6 Day June 8th!

The “IPv6” we’re talking about here is a number which is assigned to any device — like a computer or printer — that uses the Internet. If you look up information from your network or Internet service provider (ISP), somewhere in that information, you’ve probably seen an address like “172.16.254.1”. That is your IP address (and that example shows the old format, an IPv4 address). This format provides enough variations to allow about 4,294,967,296 addresses (says Wikipedia).

The only problem is that the internet has become the victim of its own success. So many devices are connected to the Internet that those 4,294,967,296 addresses will be used up this year. Therefore, many website owners and network operators are switching to a new system called IPv6. Instead of the 32-bit binary number IPv4 , IPv6 will use a 128-bit number. You don’t have to be a math whiz to figure out this is going to make oodles of new addresses available (oodles, being the technical term).

Most Internet users will not notice a difference. Your home ISP or your office network is probably being updated to provide this functionality. In addition, only a handful of the Internet’s largest sites (such as Yahoo and Google) are rolling out IPv6 tomorrow (and they’ll still have regular IPv4 servers available). If you have a standalone device, such as a wireless, Internet-capable printer, you may have to download updates to the machine. If you run your own network servers, hopefully you’re already aware of this issue. If not, get more information from the Internet Society here.

If you’d like to test your connection, you can do so at this IPv6 test site.