I was reading another thread and someone asked why there was no IPv6 support, so I decided to start a new thread since I have a couple of my own questions. The reason there's no IPv6 support is because Tomato is using a very old Linux kernel (2.4.20) which was released in 2003. IPv6 support was added to Linux with the 2.6.12 kernel in 2005. So, as you can see, Tomato is using a kernel that is 7 years old. Why Tomato uses this old kernel, I don't know (I think the original Cisco firmware used this old kernel so perhaps it was easier to keep using it for legacy reasons). Maybe it is smaller than 2.6 and can be fit on these routers more easily. At any rate, the reason DD-WRT has IPv6 support is because it uses a newer (>2.6.12) Linux kernel. Now, the only reason I care about this is because it means Tomato cannot stop attacks on listening IPv6 services. So, IPv6 is a security threat for those of us who rely on Tomato as our only firewall. For instance, on my LAN, I have samba listening on tcp6 and ntp listening on udp6. Since Tomato cannot filter them, this means they are potentially wide-open to attack unless I run a software firewall (which I do not want to do). In fact, there was an article written a couple of years back warning of this very IPv6 threat. If you are interested in the potential issues with not having an IPv6 aware firewall, definitely read that article. I use Linux exclusively on all my boxes (Ubuntu in particular) and it's impossible to turn IPv6 off inside the OS without recompiling the kernel (Ubuntu used to allow you to blacklist IPv6 at boot time, but they no longer allow this for some stupid reason). I have compiled many a kernel in my day but I really don't want to do that on my production machine. At any rate, my question: is there a Tomato mod that is using a newer >2.6.12 kernel that is IPv6 aware? EDIT: After reading a bit more, it seems some sources say that Ipv6 is indeed enabled on 2.4 kernels. Can anyone verify whether this is true, at least for Tomato? Wikipedia is saying Ipv6 was "taken out of experimental mode" in 2.6.12.