“You’ll be able to address every single blade of grass on the planet with an individual IP address”. Those where the words I recall a network specialist telling me many years ago about what IP version 6 would be capable of. I was greatly impressed. Today, the Wikipedia article states there are “approximately 5×10^28 addresses for each of the roughly 6.8 billion people alive in 2010.” You know that Internet-connected systems have an address. For a large majority of those machines, these are so-called IPv4 addresses, 32 bit values, and the number of free addresses is diminishing at a very rapid rate. (The exhaustion of these addresses is nicely visualized by this animated image.) Until now most people, including myself, have ignored this, but the time has come to look into IPv6 very much more closely. In order to accomplish the transition into the IPv6 world, I have applied for and received a complimentary IPv6 subnet which is routed through a tunnel to my LAN. Martin’s explanation of how it all fits in was sound, so I quickly applied for and got a tunnel. SixXS request you be honest and verbose when applying, which I must have been because I got a high amount of ISK credited to my account. Before even setting up the tunnel I was therefore able to apply for a subnet and choose a POP. I selected the POP operated by our good friends at SpeedPartner, and got a subnet allocated to me shortly after midnight, a mere 25 hours after first sending off the SixXS application. In my private life my SoHo is set up behind a residential DSL somewhat like yours probably is My ISP doesn’t provide IPv6, so this is where the tunneling begins. Without touching my router which, although IPv6-capable, has problems with IPv6 firewalling, I set up a Linux box in my LAN (the red IPv6 square in the diagram). This is the machine that sets up the AYIYA tunnel to the SixXS gateway. SixXS also provide an automated connectivity client for a number of platforms, called AICCU, which makes it a snap to set up the tunnel. In a minute or two I was able to ping the PoP’s IPv6 address. Then comes the nitty gritty of configuring the allocated subnet. There are plenty of (rather bad) “howtos” floating around so I won’t add another (bad one). So I now have a /48 IPv6 subnet routed into my home. That gives me a possible 65,535 networks, each of which can have 18,446,744,073,709,551,616 addresses allocated to them. I’ll have to start looking for addressable objects. Looking out of the window for inspiration, falling raindrops come to mind…

DNS and IPv6 :: 31 Oct 2010 :: e-mail


blog comments powered by Disqus