A Linksys WRT54G provides a cheap and easy linux platform in a small package. I use the DD-WRT firmware available from www.dd-wrt.com. It also provides an easy way of enabling IPv6 access to your network

To enable IPv6 you first need to create an account with a tunnel provider such as SiXXs. A guide to doing this can be found at the Sixxs site. This gives you a remote endpoint for your IPv6 in IPv4 tunnel.

Once the account is setup enable IPv6 on the router via the “IPv6 Support” option under Administration, and then the Management tab.

The following script added to the routers startup config will start the tunnel when the router is rebooted.

ip tunnel add sixxs mode sit local aaa.aaa.aaa.aaa remote bbb.bbb.bbb.bbb
ip link set sixxs up
ip link set mtu 1280 dev sixxs
ip tunnel change sixxs ttl 64
ip -6 addr add 2051:4bd1:2002:9b::2/64 dev sixxs
ip -6 ro add default via 2001:4bd0:2000:9b::1 dev sixxs

aaa.aaa.aaa.aaa – A local, externally accesible IPv4 address.
bbb.bbb.bbb.bbb – The IPv4 address of the pop to connect to.

2051:4bd1:2002:9b::2/64 – Local IPv6 address.
2051:4bd1:2002:9b::1/64 – Remote IPv6 address.

Once the tunnel has been working for a week. SiXXs will allow you to assign a subnet to it that you can distribute using Radvd.

The Where-Fi data has been uploaded, and a pre-alpha, version is available at http://www.remoteroot.net/wifi.

You’ve been warned, its buggy.

More updates soon.

We’ve been gathering more data for the Where-fi service, in under three hours of driving around a sub-section of Reading we have 2000 plus access points.

This broke the architecture we had for displaying them, so it’s currently down.