I’m using this free tunnel broker (homepage) and I’m quite happy with the service. It’s mainly european tunnel broker which provides tunnels using several technologies including AYIYA which can traverse NAT.
You have to register and wait for account creation (mine was accepted in few minutes and tunnel was created about a hour later).
In Debian you should add repository with their client to
/etc/apt/sources.list and install (it’s called
aiccu and is open source).
echo "deb http://www.sixxs.net/archive/sixxs/aiccu/debian/ unstable main" >> /etc/apt/sources.list && \ apt-get update && \ apt-get install aiccu
debconf will then ask for settings but you can configure them by editing
/etc/aiccu.conf. Now it’s all ready.
From now ping6, traceroute6 and other tools will start working, browser will start using AAAA DNS records (IPv6 addresses) and your computer will be available in IPv6 internet. Don’t forget to firewall your services with
2.6.20 and newer kernels it should be merged with IPv4 in
SixXS also provides IPv6 to IPv4 and IPv4 to IPv6 website gateway (http://ipv6gate.sixxs.net/) which can be very handy and can ease complete transition to IPv6.