DD-WRT has recently been compiling firmware’s using the 3.x Linux kernel compared to the 2.4 and 2.6 builds. These newer kernel builds provide various improvements to the firmware. Being someone has been using K2.6 builds for a while, I decided to take the plunge and upgrade and check out how my setup worked on 3.x builds. One major setup I have is a Hurricane Electric tunnel setup on the router for IPv6. This didn’t work the same way it did on K2.6 and required some additional work. Here’s my adventures of IPv6 in DD-WRT on the 3.x builds. Hopefully providing some useful information for anyone else wanting to do the same thing