{"id":313,"date":"2009-05-25T13:27:58","date_gmt":"2009-05-25T04:27:58","guid":{"rendered":"http:\/\/www.joewein.net\/blog\/?p=313"},"modified":"2009-05-25T21:45:43","modified_gmt":"2009-05-25T12:45:43","slug":"ipv6-with-dd-wrt-router-and-hurricane-electric","status":"publish","type":"post","link":"https:\/\/joewein.net\/blog\/2009\/05\/25\/ipv6-with-dd-wrt-router-and-hurricane-electric\/","title":{"rendered":"IPv6 with DD-WRT router and Hurricane Electric"},"content":{"rendered":"

Last weekend I got IPv6 working on my US$60 router<\/a>, allowing all my machines here to talk IPv6 to the outside world. That includes an Ubuntu Linux server<\/a>, 4 PCs and one Mac.<\/p>\n

The biggest incentive for upgrading to IPv6 is the fact that at the current pace we’ll run out of (IPv4) IP addresses<\/a> in about two years. These are the unique host addresses (usually written in dotted decimal format like 209.85.171.100) that identify client and server computers on the Internet. The newer IPv6 standard that replaces 32-bit addresses with 128-bit addresses will forever take care of this shortage. It will also do away with the primary need for Network Address Translation (NAT) which has been a big headache for voice over IP (VoIP) and other peer to peer applications.<\/p>\n

However, over a decade after the introduction of the newer standard (in 1997), uptake is still slow. Many ISPs still don’t support IPv6 and neither does a lot of the equipment used at homes and offices. This is gradually starting to change. IPv6 is an integral part of modern operating systems such as Linux, Mac OS X, Windows 7, Windows 2008 Server, Windows Vista, Windows 2003 Server and Windows XP (where it’s optional). <\/p>\n

If your ISP does not support IPv6, you can still use it by employing the services of a tunnel broker, which gives you IPv6 connectivity over an IPv4 tunnel. This lets you test your software with the new APIs, though you won’t gain native IPv6 performance. If you have a static IP you can use tunnelbroker.net by Hurricane Electric, Inc. Their service is professionally run and free. Another option is SixXS, but I have not tried them.<\/p>\n

My router is a Buffalo WHR-HP-G54<\/a>, which is compatible with the Linux based open source DD-WRT firmware. Recent versions of DD-WRT have IPv6 support. My first attempt with the v24 sp1 std build which is supposed to include IPv6 was unsuccessful, but I had more luck after trying the v24 10070 crushedhat version (dd-wrt.v24-10070_crushedhat_4MB.bin)<\/a>. Here’s what you do:<\/p>\n